LHT65N-VIB LoRaWAN Vibration Sensor Manual

The Dragino LHT65N-VIB (% style="color:blue" %)**LoRaWAN Vibration Sensor**(%%) is designed to (% style="color:blue" %)**detect and measure vibrations, shocks, or accelerations of an object.**(%%) By analyze the motion of the object, LHT65N-VIB can send meaningful resulte such as: Alarm, device runtime, counting, vibration strenght to IoT platform for further analyze.

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It targets professional wireless sensor network applications such as monitoring equipment status, water leakage alarm, usage statistics, vibration intensity detection, etc.

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LHT65N-VIB supports (% style="color:blue" %)**Datalog Feature**(%%). It will record the data when there is no network coverage and users can retrieve the sensor value later to ensure no miss for every sensor reading.

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The LHT65N-VIB allows users to send data and reach extremely long ranges. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.

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LHT65N-VIB has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) which can be used for up to 3 years*.

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LHT65N-VIB is full compatible with LoRaWAN v1.0.3 Class A protocol, it can work with a standard LoRaWAN gateway.

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*The actual battery life depends on how often to send data, please see the battery analyzer chapter.

== 1.2 Features ==

* LoRaWAN v1.0.3 Class A protocol

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* Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915

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* Detecting object vibration status

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* Detect vibration alarm

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* 3-axis accelerator for x,y,z

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* Calcula device runtime

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* Built-in 2400mAh battery for long time use

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* Built-in Temperature & Humidity sensor

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* Tri-color LED to indicate working status

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* Datalog feature (Max 3328 records)

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* AT Commands to change parameters

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* Remote configure parameters via LoRaWAN Downlink

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* Firmware upgradeable via program port

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== 1.3 Specification ==

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(% style="color:#037691" %)**Built-in Temperature Sensor:**

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* Resolution: 0.01 °C

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* Accuracy Tolerance : Typ ±0.3 °C

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* Long Term Drift: < 0.02 °C/yr

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* Operating Range: -40 ~~ 85 °C

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(% style="color:#037691" %)**Built-in Humidity Sensor:**

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* Resolution: 0.04 %RH

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* Accuracy Tolerance : Typ ±3 %RH

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* Long Term Drift: < 0.25 RH/yr

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* Operating Range: 0 ~~ 96 %RH

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(% style="color:#037691" %)**External Vibration Sensor:**

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* Detecting object vibration status

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* accelerator for x,y,z

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* Small size for easy installation

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* Acceleration: ±2g,±4g,±8g;±16g

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* Frequency: 25Hz,50Hz,100Hz,200Hz,400Hz

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= 2. Connect LHT65N-VIB to IoT Server =

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== 2.1 How does LHT65N-VIB work? ==

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LHT65N-VIB is configured as LoRaWAN OTAA Class A mode by default. Each LHT65N-VIB is shipped with a worldwide unique set of OTAA keys. To use LHT65N-VIB in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N-VIB.

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If LHT65N-VIB is under the coverage of this LoRaWAN network. LHT65N-VIB can join the LoRaWAN network automatically. After successfully joining, LHT65N-VIB will start to measure environment temperature and humidity, and start to transmit sensor data to the LoRaWAN server. The default period for each uplink is 20 minutes.

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== 2.2 How to Activate LHT65N-VIB? ==

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The LHT65N-VIB has two working modes:

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(% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N-VIB doesn't have any LoRaWAN activation. This mode is used for storage and shipping to save battery life.

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* (((

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(% style="color:blue" %)**Working Mode**(%%): In this mode, LHT65N-VIB works as LoRaWAN Sensor mode to Join LoRaWAN network and send out the sensor data to the server. Between each sampling/tx/rx periodically, LHT65N-VIB will be in STOP mode (IDLE mode), in STOP mode, LHT65N has the same power consumption as Deep Sleep mode.

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The LHT65N-VIB is set in deep sleep mode by default; The ACT button on the front is to switch to different modes:

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[[image:image-20230717144740-2.png||_mstalt="430794" height="391" width="267"]]

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

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|=(% style="width: 167px;background-color:#4F81BD;color:white" %)**Behavior on ACT**|=(% style="width: 117px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 226px;background-color:#4F81BD;color:white" %)**Action**

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|(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT between 1s < time < 3s|(% style="background-color:#f2f2f2; width:117px" %)Test uplink status|(% style="background-color:#f2f2f2; width:225px" %)(((

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If LHT65N-VIB is already Joined to rhe LoRaWAN network, LHT65N will send an uplink packet, if LHT65N has external sensor connected,(% style="color:blue" %)**Blue led** (%%)will blink once. If LHT65N-VIB has not external sensor, (% style="color:red" %)**Red led**(%%) will blink once.

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|(% style="background-color:#f2f2f2; width:167px" %)Pressing ACT for more than 3s|(% style="background-color:#f2f2f2; width:117px" %)Active Device|(% style="background-color:#f2f2f2; width:225px" %)(((

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(% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will fast blink 5 times, LHT65N-VIB will enter working mode and start to JOIN LoRaWAN network.

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(% style="background-color:#f2f2f2; color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after join in network.

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|(% style="background-color:#f2f2f2; width:167px" %)Fast press ACT 5 times.|(% style="background-color:#f2f2f2; width:117px" %)Deactivate Device|(% style="background-color:#f2f2f2; width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means LHT65N-VIB is in Deep Sleep Mode.

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== 2.3 Example to join LoRaWAN network ==

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(% class="wikigeneratedid" %)

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This section shows an example of how to join the TTN V3 LoRaWAN IoT server. Use with other LoRaWAN IoT servers is of a similar procedure.

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(% class="wikigeneratedid" %)

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[[image:image-20241014144235-2.png||height="344" width="787"]]

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Assume the LPS8v2 is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network]], So it provides network coverage for LHT65N-VIB. Next we need to add the LHT65N-VIB device in TTN V3:

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=== 2.3.1 Step 1: Create Device on TTN ===

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Create a device in TTN V3 with the OTAA keys from LHT65N-VIB.

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Each LHT65N-VIB is shipped with a sticker with its device EUI, APP Key and APP EUI as below:

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[[image:image-20230426083319-1.png||_mstalt="431106" height="258" width="556"]]

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User can enter these keys in the LoRaWAN Server portal. Below is TTN V3 screenshot:

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Add APP EUI in the application.

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(% style="color:blue" %)**1. Create application**

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/1654935135620-998.png?rev=1.1||alt="1654935135620-998.png"]]

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**Add APP EUI and DEV EUI**

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-4.png?width=753&height=551&rev=1.1||alt="图片-20220611161308-4.png"]]

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**Add APP EUI in the application**

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-5.png?width=742&height=601&rev=1.1||alt="图片-20220611161308-5.png"]]

**Add APP KEY**

[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50v2-S31-S31B%20LoRaWAN%20Temperature%20%26%20Humidity%20Sensor%20User%20Manual/WebHome/image-20220611161308-6.png?width=744&height=485&rev=1.1||alt="图片-20220611161308-6.png"]]

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=== 2.3.2 Step 2: Activate LHT65N-VIB by pressing the ACT button for more than 5 seconds. ===

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Use ACT button to activate LHT65N-VIB and it will auto-join to the TTN V3 network. After join success, it will start to upload sensor data to TTN V3 and user can see in the panel.

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[[image:image-20241011171332-1.png||height="238" width="816"]]

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=== 2.3.3 Decoder in TTN V3 ===

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When the uplink payload arrives TTNv3, it shows HEX format and not friendly to read. We can add LHT65N-VIB decoder in TTNv3 for friendly reading.

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Below is the position to put the decoder and LHT65N-VIB decoder can be download from here: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>https://github.com/dragino/dragino-end-node-decoder]]

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[[image:image-20220522234118-10.png||_mstalt="451464" height="353" width="729"]]

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== 2.4 Uplink Payload (Fport~=2) ==

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The uplink payload includes totally 11 bytes. Uplink packets use FPORT=2 and (% style="color:#4f81bd" %)**every 20 minutes**(%%) send one uplink by default.

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After each uplink, the (% style="color:blue" %)**BLUE LED**(%%) will blink once.

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There are four different working modes:

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VIBMOD=1 vib count, work min

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VIBMOD=2 TempC_SHT, Hum_SHT, vib count

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VIBMOD=3 TempC_SHT, Hum_SHT, vib min

VIBMOD=4 X, Y, Z

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=== 2.4.1 VIBMOD~=1 ===

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:310px" %)

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|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((

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**Size(bytes)**

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)))|=(% style="width: 40px;background-color:#4F81BD;color:white" %)(((

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**2**

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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1

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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**4**

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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|(% style="width:110px" %)(((

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Value

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)))|(% style="width:71px" %)(((

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BAT

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)))|(% style="width:99px" %)MOD

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Alarm

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TDC|(% style="width:132px" %)vib_count|(% style="width:54px" %)work_min

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[[image:image-20241011175741-3.png||height="187" width="1023"]]

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==== 2.4.1.1 BAT-Battery Info ====

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These two bytes of BAT include the actually voltage

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[[image:image-20241012091339-4.png||height="92" width="787"]]

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Check the battery voltage for LHT65N-VIB.

* 0x0BF2/1000=3.058V

==== 2.4.1.2 VIBMOD and Alarm and TDC ====

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[[image:image-20241012092023-5.png||height="89" width="792"]]

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bytes[2]=0x06=0000 0110

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Current working mode=(bytes[2]>>2)&0x07=1

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Current alarm situation= (bytes[2] & 0x01)? "TRUE":"FALSE";=0=FALSE

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Whether the current data occurs is TDC (the data will be uploaded by the alarm)= (bytes[2] & 0x02)? "YES":"NO";=00000010 (non -zero value)=YES

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==== 2.4.1.3 vib_count ====

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vib_count it means how many vibration events have been recorded

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[[image:image-20241012092938-6.png||height="102" width="770"]]

* 0x00000007=7

==== 2.4.1.4 work_min ====

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It means how long the current vibration sensor has worked in the latest triggering.

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[[image:image-20241012093112-7.png||height="68" width="775"]]

* 0x00000000=0

0 means that the current vibration sensor is not triggered.

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=== 2.4.2 VIBMOD~=2 ===

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:380px" %)

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|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((

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**Size(bytes)**

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)))|=(% style="width: 40px;background-color:#4F81BD;color:white" %)(((

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**2**

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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1

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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**4**

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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2

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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|(% style="width:110px" %)(((

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Value

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)))|(% style="width:71px" %)(((

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BAT

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)))|(% style="width:99px" %)MOD

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Alarm

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TDC|(% style="width:132px" %)vib_count|(% style="width:54px" %)TempC_SHT|(% style="width:54px" %)Hum_SHT

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[[image:image-20241012093705-8.png||height="106" width="879"]]

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==== 2.4.2.1 BAT-Battery Info ====

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These two bytes of BAT include the actually voltage

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[[image:image-20241012094035-9.png||height="71" width="946"]]

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Check the battery voltage for LHT65N-VIB.

* 0x0BC6/1000=3.014V

==== 2.4.2.2 VIBMOD and Alarm and TDC ====

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[[image:image-20241012094131-10.png||height="126" width="934"]]

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bytes[2]=0x0A=0000 0101

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Current working mode=(bytes[2]>>2)&0x07=2

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Current alarm situation= (bytes[2] & 0x01)? "TRUE":"FALSE";=0=FALSE

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Whether the current data occurs is TDC (the data will be uploaded by the alarm)= (bytes[2] & 0x02)? "YES":"NO";=00000010 (non -zero value)=YES

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==== 2.4.2.3 vib_count ====

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[[image:image-20241012094340-11.png||height="92" width="954"]]

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vib_count it means how many vibration events have been recorded

* 0x00000000=0

==== 2.4.2.4 TempC_SHT ====

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[[image:image-20241012094549-12.png||height="64" width="941"]]

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The temperature detected by the built-in temperature sensor SHT31.

* 0x0B22/100=28.5

==== 2.4.2.5 Hum_SHT ====

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[[image:image-20241012094803-13.png||height="76" width="950"]]

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The temperature detected by the built-in humidity sensor SHT31.

* 0x0212/10=53

=== 2.4.3 VIBMOD~=3 ===

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:380px" %)

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|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((

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**Size(bytes)**

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)))|=(% style="width: 40px;background-color:#4F81BD;color:white" %)(((

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**2**

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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1

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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**2**

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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)))|=(% style="width: 70px;background-color:#4F81BD;color:white" %)(((

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)))

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|(% style="width:110px" %)(((

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Value

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)))|(% style="width:71px" %)(((

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BAT

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)))|(% style="width:99px" %)MOD

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Alarm

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TDC|(% style="width:132px" %)TempC_SHT|(% style="width:54px" %)Hum_SHT|(% style="width:54px" %)work_min

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[[image:image-20241012094926-14.png||height="91" width="984"]]

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==== 2.4.3.1 BAT-Battery Info ====

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These two bytes of BAT include the actually voltage

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[[image:image-20241012095155-15.png]]

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Check the battery voltage for LHT65N-VIB.

* 0x0BC2/1000=3.01V

==== 2.4.3.2 VIBMOD and Alarm and TDC ====

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[[image:image-20241012095322-16.png||height="101" width="1094"]]

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bytes[2]=0x0A=0000 1110

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Current working mode=(bytes[2]>>2)&0x07=3

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Current alarm situation= (bytes[2] & 0x01)? "TRUE":"FALSE";=0=FALSE

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Whether the current data occurs is TDC (the data will be uploaded by the alarm)= (bytes[2] & 0x02)? "YES":"NO";=00000010 (non -zero value)=YES

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==== 2.4.3.3 TempC_SHT ====

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[[image:image-20241012095445-17.png]]

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The temperature detected by the built-in temperature sensor SHT31.

* 0x0B21/100=28.49

==== 2.4.3.4 Hum_SHT ====

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[[image:image-20241012095509-18.png]]

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The temperature detected by the built-in humidity sensor SHT31.

* 0x0213/10=53.1

==== 2.4.3.5 work_min ====

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It means how long the current vibration sensor has worked in the latest triggering.

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[[image:image-20241012095558-19.png||height="83" width="1029"]]

* 0x00000000=0

0 means that the current vibration sensor is not triggered.

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=== 2.4.4 VIBMOD~=4(FPORT~=7) ===

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:310px" %)

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|=(% style="width: 60px;background-color:#4F81BD;color:white" %)(((

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**Size(bytes)**

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)))|=(% style="width: 50px; background-color: rgb(79, 129, 189); color: white;" %)(((

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**2**

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)))|=(% style="width: 50px; background-color: rgb(79, 129, 189); color: white;" %)(((

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2

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)))|=(% style="width: 50px; background-color: rgb(79, 129, 189); color: white;" %)(((

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**2**

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)))|=(% style="width: 50px; background-color: rgb(79, 129, 189); color: white;" %)(((

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2

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)))|=(% style="width: 50px; background-color: rgb(79, 129, 189); color: white;" %)(((

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)))

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|(% style="width:110px" %)(((

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Value

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)))|(% style="width:40px" %)(((

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BAT

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)))|(% style="width:50px" %)X|(% style="width:44px" %)Y|(% style="width:43px" %)Z|(% style="width:133px" %)......

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[[image:image-20241014171434-4.png]]

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X=0xFC50 In binary, it is represented as 1111110000110111, the highest bit is 1, indicating a negative number, and its complement is -977

Y=0x0014=20

Z=0x00F6=246

== 2.5 Show data on Datacake ==

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Datacake IoT platform provides a human-friendly interface to show the sensor data, once we have sensor data in TTN V3, we can use Datacake to connect to TTN V3 and see the data in Datacake. Below are the steps:

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(% style="color:blue" %)**Step 1**(%%): Be sure that your device is programmed and properly connected to the LoRaWAN network.

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(% style="color:blue" %)**Step 2**(%%): Configure your Application to forward data to Datacake you will need to add integration. Go to TTN V3 Console ~-~-> Applications ~-~-> Integrations ~-~-> Add Integrations.

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Add Datacake:

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[[image:image-20220523000825-7.png||_mstalt="429884" height="262" width="583"]]

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Select default key as Access Key:

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[[image:image-20220523000825-8.png||_mstalt="430248" height="453" width="406"]]

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In Datacake console ([[https:~~/~~/datacake.co/>>url:https://datacake.co/]]) , add LHT65 device.

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[[image:image-20220523000825-9.png||_mstalt="430612" height="366" width="392"]]

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[[image:image-20220523000825-10.png||_mstalt="450619" height="413" width="728"]]

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== 2.8 LED Indicator ==

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The LHT65 has a triple color LED which for easy showing different stage .

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While user press ACT button, the LED will work as per LED status with ACT button.

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In a normal working state:

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* For each uplink, the BLUE LED or RED LED will blink once.

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BLUE LED when external sensor is connected.

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* RED LED when external sensor is not connected

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* For each success downlink, the PURPLE LED will blink once

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== 2.9 installation ==

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[[image:image-20220516231650-1.png||_mstalt="428597" height="436" width="428"]]

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= 4. Configure LHT65N-VIB via AT command or LoRaWAN downlink =

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Use can configure LHT65N-VIB via AT Command or LoRaWAN Downlink.

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AT Command Connection: See [[FAQ>>||anchor="H6.FAQ"]].

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LoRaWAN Downlink instruction for different platforms: [[IoT LoRaWAN Server>>doc:Main.WebHome]]

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There are two kinds of commands to configure LHT65N-VIB, they are:

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(% style="color:#4f81bd" %)**General Commands**.

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These commands are to configure:

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1. (((

General system settings like: uplink interval.

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1. (((

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LoRaWAN protocol & radio-related commands.

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They are the same for all Dragino Devices which supports DLWS-005 LoRaWAN Stack(Note~*~*). These commands can be found on the wiki: [[End Device Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]

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(% style="color:#4f81bd" %)**Commands special design for LHT65N**(%%)-VIB

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These commands are only valid for LHT65N-VIB, as below:

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== 4.1 Set Transmit Interval Time ==

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Feature: Change LoRaWAN End Node Transmit Interval.

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(% style="color:#4f81bd" %)**AT Command: AT+TDC**

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(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:501px" %)

599

|(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:166px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:180px" %)**Response**

600

|(% style="width:155px" %)AT+TDC=?|(% style="width:162px" %)Show current transmit Interval|(% style="width:177px" %)30000 OK the interval is 30000ms = 30s

601

|(% style="width:155px" %)AT+TDC=60000|(% style="width:162px" %)Set Transmit Interval|(% style="width:177px" %)OK Set transmit interval to 60000ms = 60 seconds

602

603

(% style="color:#4f81bd" %)**Downlink Command: 0x01**

604

605

Format: Command Code (0x01) followed by 3 bytes time value.

606

607

If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.

608

609

* **Example 1**: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds

610

611

* **Example 2**: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds

612

613

== 4.2 Set Vibration Sensor Mode ==

614

615

616

Feature: Change Vibration Sensor Mode.

617

618

(% style="color:#4f81bd" %)**AT Command: AT+VIBMOD**

619

620

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

621

|(% style="background-color:#4f81bd; color:white; width:175px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:247px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:88px" %)**Response**

622

|(% style="width:155px" %)AT+VIBMOD=MOD,AlarmTime,StopDurationTime|(% style="width:151px" %)(((

623

MOD:1,2,3

624

625

AlarmTime:Set the duration of continuous operation to trigger the alarm (unit: seconds)( Set AlarmTimeout to 0 disable Alarm)

626

627

StopDurationTime:After the interval time is exceeded, it will be counted as a trigger

628

)))|(% style="width:158px" %)OK

629

|(% style="width:155px" %)AT+VIBMOD=4,Collectioninterval,groups|(% style="width:151px" %)(((

630

4:MOD=4

631

632

Collection:Collection interval(unit: seconds)

633

634

groups:Number of collection groups

635

)))|(% style="width:158px" %)OK

636

637

**Example:AT+VIBMOD=1,60,10**

638

639

Mode 1 will display vib_count and work_min without temperature and humidity. If the vibration stops for more than 60 seconds, an alarm message will be generated.

640

641

If the vibration stops for more than 10 seconds, vib_count will increase by one and work_min will be reset to zero.

642

643

644

(% style="color:#4f81bd" %)**Downlink Command: **

**Example:**

* **AT+VIBMOD=1,60,10=0x0A01003c000A**

649

650

**Example:AT+VIBMOD=4,1,10**

651

652

MOD4 sets the collection interval to 10 second and collects 1 sets of data in total.

653

654

[[image:image-20241014171308-3.png||height="65" width="709"]]

655

656

657

(% style="color:#4f81bd" %)**Downlink Command: **

**Example:**

* **AT+VIBMOD=4,1,10=0x0A0400010A**

662

663

== 4.3 Vibration sensitivity setting ==

664

665

666

**Feature**: Users can adjust the sensitivity settings according to different usage scenarios.

667

668

669

(% style="color:#4f81bd" %)**AT Command:**

670

671

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

672

|(% style="background-color:#4f81bd; color:white; width:175px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:247px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:88px" %)**Response**

673

|(% style="width:155px" %)AT+VIBSET=acceleration,frequency,threshold, duration|(% style="width:136px" %)Acceleration: 0:±2g,1:±4g,2:±8g;3:±16g

674

Frequency: 0:25Hz,1:50Hz,2:100Hz,3:200Hz,4:400Hz

675

Threshold: interrupt threshold

676

Duration: Interrupt detection duration(unit ms)|(% style="width:86px" %)OK

677

678

**Example:AT+VIBSET=0,4,10,12**

679

680

The acceleration is set to ±2g and the frequency is 400Hz. The Threshold is set to 10*16mg. This means that the change difference between 158-162 can be detected.

681

682

I want to detect an event that lasts at least 30 milliseconds, so I set the register to 30/2.5=12 counts. When the time difference between consecutive readings exceeds 12 duration LSBs, an interrupt will be triggered. See the figure below for specific values.

683

684

[[image:image-20241014154353-1.png||height="307" width="727"]]

685

686

[[image:image-20241014154413-2.png||height="509" width="715"]]

687

688

689

(% style="color:#4f81bd" %)**Downlink Command:**

690

691

* **AT+VIBSET=0,4,10,12=0x0900040A0C**

692

693

== 4.4 Set Password ==

694

695

696

Feature: Set device password, max 9 digits

697

698

(% style="color:#4f81bd" %)**AT Command: AT+PWORD**

699

700

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:372px" %)

701

|(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:128px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:89px" %)**Response**

702

|(% style="width:155px" %)AT+PWORD=?|(% style="width:124px" %)Show password|(% style="width:86px" %)(((

123456

OK

)))

|(% style="width:155px" %)AT+PWORD=999999|(% style="width:124px" %)Set password|(% style="width:86px" %)OK

708

709

(% style="color:#4f81bd" %)**Downlink Command:**

710

711

No downlink command for this feature.

712

713

714

== 4.5 Quit AT Command ==

715

716

717

Feature: Quit AT Command mode, so user needs to input password again before use AT Commands.

718

719

(% style="color:#4f81bd" %)**AT Command: AT+DISAT**

720

721

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:433px" %)

722

|(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:191px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:87px" %)**Response**

723

|(% style="width:155px" %)AT+DISAT|(% style="width:191px" %)Quit AT Commands mode|(% style="width:86px" %)OK

724

725

(% style="color:#4f81bd" %)**Downlink Command:**

726

727

No downlink command for this feature.

728

729

730

== 4.6 Set to sleep mode ==

731

732

733

Feature: Set device to sleep mode

734

735

* **AT+Sleep=0** : Normal working mode, device will sleep and use lower power when there is no LoRa message

736

* **AT+Sleep=1** : Device is in deep sleep mode, no LoRa activation happen, used for storage or shipping.

737

738

(% style="color:#4f81bd" %)**AT Command: AT+SLEEP**

739

740

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:513px" %)

741

|(% style="background-color:#4f81bd; color:white; width:155px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:140px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:218px" %)**Response**

742

|(% style="width:155px" %)AT+SLEEP|(% style="width:139px" %)Set to sleep mode|(% style="width:213px" %)(((

743

Clear all stored sensor data…

OK

)))

(% style="color:#4f81bd" %)**Downlink Command:**

749

750

* There is no downlink command to set to Sleep mode.

751

752

== 4.7 Set system time ==

753

754

755

Feature: Set system time, unix format. [[See here for format detail.>>||anchor="H2.6.2UnixTimeStamp"]]

756

757

(% style="color:#4f81bd" %)**AT Command:**

758

759

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:506px" %)

760

|(% style="background-color:#4f81bd; color:white; width:188px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:318px" %)**Function**

761

|(% style="width:154px" %)AT+TIMESTAMP=1611104352|(% style="width:285px" %)(((

762

OK

763

764

Set System time to 2021-01-20 00:59:12

765

)))

766

767

(% style="color:#4f81bd" %)**Downlink Command:**

768

769

0x306007806000 ~/~/ Set timestamp to 0x(6007806000),Same as AT+TIMESTAMP=1611104352

770

771

772

== 4.8 Set Time Sync Mode ==

(((

Feature: Enable/Disable Sync system time via LoRaWAN MAC Command (DeviceTimeReq), LoRaWAN server must support v1.0.3 protocol to reply this command.

)))

(((

SYNCMOD is set to 1 by default. If user want to set a different time from LoRaWAN server, user need to set this to 0.

781

)))

782

783

(% style="color:#4f81bd" %)**AT Command:**

784

785

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:475px" %)

786

|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:317px" %)**Function**

787

|(% style="width:156px" %)AT+SYNCMOD=1|(% style="width:315px" %)Enable Sync system time via LoRaWAN MAC Command (DeviceTimeReq)

788

789

(% style="color:#4f81bd" %)**Downlink Command:**

790

791

0x28 01 ~/~/ Same As AT+SYNCMOD=1

792

0x28 00 ~/~/ Same As AT+SYNCMOD=0

793

794

795

== 4.9 Set Time Sync Interval ==

796

797

798

Feature: Define System time sync interval. SYNCTDC default value: 10 days.

799

800

(% style="color:#4f81bd" %)**AT Command:**

801

802

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:472px" %)

803

|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:314px" %)**Function**

804

|(% style="width:156px" %)AT+SYNCTDC=0x0A |(% style="width:311px" %)Set SYNCTDC to 10 (0x0A), so the sync time is 10 days.

805

806

(% style="color:#4f81bd" %)**Downlink Command:**

807

808

**0x29 0A** ~/~/ Same as AT+SYNCTDC=0x0A

== 4.10 Get data ==

Feature: Get the current sensor data.

815

816

(% style="color:#4f81bd" %)**AT Command:**

817

818

* **AT+GETSENSORVALUE=0** ~/~/ The serial port gets the reading of the current sensor

819

* **AT+GETSENSORVALUE=1** ~/~/ The serial port gets the current sensor reading and uploads it.

820

821

== 4.11 Print data entries base on page ==

822

823

824

Feature: Print the sector data from start page to stop page (max is 416 pages).

825

826

(% style="color:#4f81bd" %)**AT Command: AT+PDTA**

827

828

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

829

|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**

830

|(% style="width:156px" %)(((

831

AT+PDTA=1,3

832

Print page 1 to 3

833

)))|(% style="width:311px" %)(((

834

Stop Tx events when read sensor data

835

836

8031000 2024/10/12 08:26:16 1 2807 tdc:yes alarm:false event_count:0 work_min:0

837

838

8031010 2024/10/12 08:26:40 1 2804 tdc:no alarm:false event_count:0 work_min:0

839

840

8031020 1970/1/1 00:00:10 1 2806 tdc:yes alarm:false event_count:0 work_min:0

841

842

8031030 2024/10/12 08:28:18 1 2805 tdc:yes alarm:false event_count:0 work_min:0

843

844

8031040 2024/10/12 08:29:18 1 2804 tdc:yes alarm:false event_count:0 work_min:0

845

846

8031050 2024/10/12 08:30:18 1 2806 tdc:yes alarm:false event_count:1 work_min:0

847

848

8031060 2024/10/12 08:30:27 1 2806 tdc:no alarm:true event_count:2 work_min:0

849

850

8031070 2024/10/12 08:31:18 1 2806 tdc:yes alarm:false event_count:3 work_min:1

851

852

[Rx][16:33:25.888] 8031080 2024/10/12 08:32:18 1 2806 tdc:yes alarm:false event_count:3 work_min:1

853

854

8031090 2024/10/12 08:33:18 1 2807 tdc:yes alarm:false event_count:3 work_min:1

80310A0

80310B0

80310C0

80310D0

80310E0

80310F0

8031100

8031110

8031120

8031130

8031140

8031150

8031160

8031170

Start Tx events

OK

)))

(% style="color:#4f81bd" %)**Downlink Command:**

890

891

No downlink commands for feature

892

893

894

== 4.12 Print last few data entries ==

895

896

897

Feature: Print the last few data entries

898

899

(% style="color:#4f81bd" %)**AT Command: AT+PLDTA**

900

901

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:510px" %)

902

|(% style="background-color:#4f81bd; color:white; width:158px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:352px" %)**Function**

903

|(% style="width:156px" %)(((

904

AT+PLDTA=5

905

Print last 5 entries

906

)))|(% style="width:311px" %)(((

907

Stop Tx events when read sensor data

908

909

0001 2024/10/12 08:33:18 1 2807 tdc:yes alarm:false event_count:3 work_min:1

910

911

0002 2024/10/12 08:34:50 1 2808 tdc:yes alarm:false event_count:3 work_min:1

912

913

0003 2024/10/12 08:35:50 1 2808 tdc:yes alarm:false event_count:3 work_min:1

914

915

0004 2024/10/12 08:36:50 1 2809 tdc:yes alarm:false event_count:3 work_min:1

916

917

0005 2024/10/12 08:37:50 1 2810 tdc:yes alarm:false event_count:3 work_min:1

918

Start Tx and RTP events

OK

)))

(% style="color:#4f81bd" %)**Downlink Command:**

923

924

No downlink commands for feature

925

926

927

== 4.13 Clear Flash Record ==

928

929

930

Feature: Clear flash storage for data log feature.

931

932

(% style="color:#4f81bd" %)**AT Command: AT+CLRDTA**

933

934

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:503px" %)

935

|(% style="background-color:#4f81bd; color:white; width:157px" %)**Command Example**|(% style="background-color:#4f81bd; color:white; width:137px" %)**Function**|(% style="background-color:#4f81bd; color:white; width:209px" %)**Response**

936

|(% style="width:155px" %)AT+CLRDTA |(% style="width:134px" %)Clear date record|(% style="width:209px" %)(((

937

Clear all stored sensor data…

OK

)))

(% style="color:#4f81bd" %)**Downlink Command: 0xA3**

943

944

* Example: 0xA301 ~/~/ Same as AT+CLRDTA

945

946

== 4.14 Auto Send None-ACK messages ==

947

948

949

Feature: LHT65N-VIB will wait for ACK for each uplink, If LHT65N-VIB doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N-VIB keeps sending messages in normal periodically. Once LHT65N-VIB gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.

950

951

(% style="color:#4f81bd" %)**AT Command: AT+PNACKMD**

952

953

The default factory setting is 0

954

955

(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:367px" %)

956

|=(% style="width: 158px;background-color:#4F81BD;color:white" %)**Command Example**|=(% style="width: 121px;background-color:#4F81BD;color:white" %)**Function**|=(% style="width: 88px;background-color:#4F81BD;color:white" %)**Response**

957

|(% style="width:158px" %)AT+PNACKMD=1|(% style="width:118px" %)Poll None-ACK message|(% style="width:87px" %)OK

958

959

(% style="color:#4f81bd" %)**Downlink Command: 0x34**

960

961

* Example: 0x3401 ~/~/ Same as AT+PNACKMD=1

962

963

= 5. Battery & How to replace =

964

965

== 5.1 Battery Type ==

(((

LHT65N-VIB is equipped with a 2400mAH Li-MnO2 (CR17505) battery . The battery is an un-rechargeable battery with low discharge rate targeting for up to 8~~10 years use. This type of battery is commonly used in IoT devices for long-term running, such as water meters.

)))

(((

The discharge curve is not linear so can't simply use percentage to show the battery level. Below is the battery performance.

974

975

[[image:image-20220515075034-1.png||_mstalt="428961" height="208" width="644"]]

976

)))

977

978

The minimum Working Voltage for the LHT65N-VIB is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.

979

980

== 5.2 Replace Battery ==

981

982

983

LHT65N-VIB has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery. Any brand should be ok.

984

985

[[image:image-20220515075440-2.png||_mstalt="429546" height="338" width="272"]][[image:image-20220515075625-3.png||_mstalt="431574" height="193" width="257"]]

986

987

988

== 5.3 Battery Life Analyze ==

(((

Dragino battery-powered products are all run in Low Power mode. User can check the guideline from this link to calculate the estimated battery life:

993

[[https:~~/~~/www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf>>https://www.dragino.com/downloads/downloads/LoRa_End_Node/Battery_Analyze/DRAGINO_Battery_Life_Guide.pdf]]

)))

(((

A full detail test report for LHT65N-VIB on different frequency can be found at : [[https:~~/~~/www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0>>https://www.dropbox.com/sh/r2i3zlhsyrpavla/AAB1sZw3mdT0K7XjpHCITt13a?dl=0]]

)))

= 6. FAQ =

== 6.1 How to connect to LHT65N-VIB UART interface? ==

1005

1006

1007

The LHT65N-VIB has the UART interface in its Type-C. The UART Interface can be used for

1008

1009

* Send AT Commands, and get output from LHT65N-VIB

1010

* Upgrade firmwre of LHT65N-VIB.

1011

1012

The hardware connection is: **PC <~-~-> USB to TTL Adapter <~-~-> Jump wires <~-~-> Type-C Adapter <~-~-> LHT65N**-VIB

1013

1014

1015

**Option of USB TTL adapter:**

1016

1017

* CP2101 USB TTL Adapter

1018

* CH340 USB TTL Adapter

1019

* FT232 USB TTL Adapter

1020

1021

**Option of Type-C Adapter:**

1022

1023

[[image:image-20240122103221-3.png||_mstalt="425594" height="694" width="1039"]]

**Connection:**

* (% style="background-color:yellow" %)**USB to TTL GND <~-~-> LHT65N GND**

1029

* (% style="background-color:yellow" %)**USB to TTL RXD <~-~-> LHT65N TXD**

1030

* (% style="background-color:yellow" %)**USB to TTL TXD <~-~-> LHT65N RXD**

(((

Connection Example:

[[image:1655802313617-381.png||_mstalt="293917"]]

1038

1039

1040

[[image:image-20240122092100-1.jpeg||_mstalt="467389" height="466" width="643"]]

1041

1042

1043

== 6.2 How to use AT Commands? ==

1044

1045

1046

First, Connect PC and LHT65N-VIB via USB TTL adapter as **FAQ 6.1**

1047

1048

In PC, User needs to set serial tool(such as [[**putty**>>https://www.chiark.greenend.org.uk/~~sgtatham/putty/latest.html]], SecureCRT) baud rate to (% style="color:green" %)**9600**(%%) to access to access serial console for LHT65N-VIB. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**) (%%)to active it. Timeout to input AT Command is 5 min, after 5-minute, user need to input password again. User can use AT+DISAT command to disable AT command before timeout.

)))

Input password and ATZ to activate LHT65N,As shown below:

1053

1054

[[image:image-20220530095701-4.png||_mstalt="430014"]]

1055

1056

1057

AT Command List is as below:

1058

1059

AT+<CMD>? : Help on <CMD>

AT+<CMD> : Run <CMD>

AT+<CMD>=<value> : Set the value

1064

1065

AT+<CMD>=? : Get the value

1066

1067

AT+DEBUG: Set more info output

1068

1069

ATZ: Trig a reset of the MCU

1070

1071

AT+FDR: Reset Parameters to Factory Default, Keys Reserve

1072

1073

AT+DEUI: Get or Set the Device EUI

1074

1075

AT+DADDR: Get or Set the Device Address

1076

1077

AT+APPKEY: Get or Set the Application Key

1078

1079

AT+NWKSKEY: Get or Set the Network Session Key

1080

1081

AT+APPSKEY: Get or Set the Application Session Key

1082

1083

AT+APPEUI: Get or Set the Application EUI

1084

1085

AT+ADR: Get or Set the Adaptive Data Rate setting. (0: off, 1: on)

1086

1087

AT+TXP: Get or Set the Transmit Power (0-5, MAX:0, MIN:5, according to LoRaWAN Spec)

1088

1089

AT+DR: Get or Set the Data Rate. (0-7 corresponding to DR_X)

1090

1091

AT+DCS: Get or Set the ETSI Duty Cycle setting - 0=disable, 1=enable - Only for testing

1092

1093

AT+PNM: Get or Set the public network mode. (0: off, 1: on)

1094

1095

AT+RX2FQ: Get or Set the Rx2 window frequency

1096

1097

AT+RX2DR: Get or Set the Rx2 window data rate (0-7 corresponding to DR_X)

1098

1099

AT+RX1DL: Get or Set the delay between the end of the Tx and the Rx Window 1 in ms

1100

1101

AT+RX2DL: Get or Set the delay between the end of the Tx and the Rx Window 2 in ms

1102

1103

AT+JN1DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 1 in ms

1104

1105

AT+JN2DL: Get or Set the Join Accept Delay between the end of the Tx and the Join Rx Window 2 in ms

1106

1107

AT+NJM: Get or Set the Network Join Mode. (0: ABP, 1: OTAA)

1108

1109

AT+NWKID: Get or Set the Network ID

1110

1111

AT+FCU: Get or Set the Frame Counter Uplink

1112

1113

AT+FCD: Get or Set the Frame Counter Downlink

1114

1115

AT+CLASS: Get or Set the Device Class

1116

1117

AT+JOIN: Join network

1118

1119

AT+NJS: Get the join status

1120

1121

AT+SENDB: Send hexadecimal data along with the application port

1122

1123

AT+SEND: Send text data along with the application port

1124

1125

AT+RECVB: Print last received data in binary format (with hexadecimal values)

1126

1127

AT+RECV: Print last received data in raw format

1128

1129

AT+VER: Get current image version and Frequency Band

1130

1131

AT+CFM: Get or Set the confirmation mode (0-1)

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AT+SNR: Get the SNR of the last received packet

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AT+RSSI: Get the RSSI of the last received packet

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AT+TDC: Get or set the application data transmission interval in ms

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AT+PORT: Get or set the application port

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AT+DISAT: Disable AT commands

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AT+PWORD: Set password, max 9 digits

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AT+CHS: Get or Set Frequency (Unit: Hz) for Single Channel Mode

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AT+CHE: Get or Set eight channels mode,Only for US915,AU915,CN470

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AT+PDTA: Print the sector data from start page to stop page

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AT+PLDTA: Print the last few sets of data

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AT+CLRDTA: Clear the storage, record position back to 1st

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AT+SLEEP: Set sleep mode

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AT+BAT: Get the current battery voltage in mV

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AT+CFG: Print all configurations

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AT+WMOD: Get or Set Work Mode

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AT+ARTEMP: Get or set the internal Temperature sensor alarm range

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AT+CITEMP: Get or set the internal Temperature sensor collection interval in min

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AT+SETCNT: Set the count at present

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AT+RJTDC: Get or set the ReJoin data transmission interval in min

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AT+RPL: Get or set response level

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AT+TIMESTAMP: Get or Set UNIX timestamp in second

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AT+LEAPSEC: Get or Set Leap Second

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AT+SYNCMOD: Get or Set time synchronization method

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AT+SYNCTDC: Get or set time synchronization interval in day

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AT+PID: Get or set the PID

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== 6.3 How to use Downlink commands? ==

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**Downlink commands:**

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(% style="color:blue" %)**TTN:**

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[[image:image-20220615092124-2.png||_mstalt="429221" height="649" width="688"]]

(% style="color:blue" %)**Helium: **

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[[image:image-20220615092551-3.png||_mstalt="430794" height="423" width="835"]]

(% style="color:blue" %)**Chirpstack: The downlink window will not be displayed until the network is accessed**

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[[image:image-20220615094850-6.png||_mstalt="433082"]]

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[[image:image-20220615094904-7.png||_mstalt="433485" height="281" width="911"]]

(% style="color:blue" %)**AWS-IOT :**

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[[image:image-20220615092939-4.png||_mstalt="434460" height="448" width="894"]]

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== 6.4 How to change the uplink interval? ==

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Please see this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20set%20the%20transmit%20time%20interval/||_mstmutation="1" style="background-color: rgb(255, 255, 255);"]]

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== 6.5 How to upgrade firmware? ==

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User can change firmware LHT65N-PIR to:

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* Change Frequency band/ region.

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* Update with new features.

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* Fix bugs.

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Firmware and changelog can be downloaded from : **[[Firmware download link>>url:https://www.dropbox.com/sh/g99v0fxcltn9r1y/AAB_TCg_9QRfMlVYDReneEJCa/LHT65N?dl=0&subfolder_nav_tracking=1]]**

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Methods to Update Firmware:

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* (Recommanded way) OTA firmware update via wireless: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]

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* Update through UART TTL interface. **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]**.

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== 6.6 Why can't I see the datalog information ==

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~1. The time is not aligned, and the correct query command is not used.

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2. Decoder error, did not parse the datalog data, the data was filtered.

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== 6.7 How can i read sensor data without LoRaWAN? For Calibration Purpose ==

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Some clients need to calibrate the sensor value in calibration Lab. In such case, Reading the data without LoRaWAN network is more convinient. To achieve this, use can use a USB Type-C Breakout board to expose the UART pins while still have the probe connected. See below. Detail Pin out please refer the FAQ of [[how to connect UART>>||anchor="H6.1HowtoconnecttoLHT65NUARTinterface3F"]]

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[[image:image-20240122092100-1.jpeg||_mstalt="467389" height="346" width="476"]]

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After there is UART Connectio, run below commands:

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1.** AT+NJM=0** ~/~/ Set Device to ABP mode , so can works without join to LoRaWAN server.

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2.** AT+GETSENSORVALUE=0** ~/~/The serial port gets the reading of the current sensor.

Example output:

[[image:image-20240128093852-1.png||_mstalt="431912" height="235" width="552"]]

= 7. Order Info =

Part Number: (% style="color:#4f81bd" %)** LHT65N-XX**

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(% style="color:#4f81bd" %)**XX **(%%): The default frequency band

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* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AS923**(%%): LoRaWAN AS923 band

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* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**AU915**(%%): LoRaWAN AU915 band

1275

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU433**(%%): LoRaWAN EU433 band

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* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**EU868**(%%): LoRaWAN EU868 band

1277

* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**KR920**(%%): LoRaWAN KR920 band

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* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**US915**(%%): LoRaWAN US915 band

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* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**IN865**(%%): LoRaWAN IN865 band

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* (% style="color:#4f81bd" %)** **(% _mstmutation="1" style="color:red" %)**CN470**(%%): LoRaWAN CN470 band

= 8. Packing Info =

**Package Includes**:

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* LHT65N-VIB LoRaWAN Vibration Sensor x 1

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= 9. Reference material =

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* [[Datasheet, photos, decoder, firmware>>https://www.dropbox.com/sh/una19zsni308dme/AACOKp6J2RF5TMlKWT5zU3RTa?dl=0]]

= 10. FCC Warning =

This device complies with part 15 of the FCC Rules.Operation is subject to the following two conditions:

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(1) This device may not cause harmful interference;

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(2) this device must accept any interference received, including interference that may cause undesired operation.

= 11. Case sharing =

== 11.1 Appendix 1: Install LHT65N-VIB to detect the number of uses of handwashing stations ==

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Case settings to: AT+Vibmod = 1,120,5

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It means that the water faucet continues to turn on, and the vibration of more than 120 seconds will issue alarm information. When the vibration stops more than 5 seconds, the number of vibrations +1

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The data starts to rise after 8 o'clock, and the wash basin sensor works normally

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Lunch time from 12 noon to 13:30, it is flat for a short period and works normally.

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The data at 18 o'clock after get off work is flat, with a small amount of data, which is caused by someone working overtime and using the wash basin.

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[[image:image-20241101174220-2.png||height="349" width="560"]]

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Number of wash basin alarms: 14 times

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The rest time is concentrated at 12 o'clock, and wash hands during lunch break.

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The reason why it lasts longer at 18 o'clock is that someone needs to open water to wash the toilet because they are cleaning

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[[image:image-20241101175954-3.png||height="210" width="601"]]

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Sink installation example:

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Fix the probe to the water inlet pipe of the sink with a cable tie. Because the vibration in the middle is not obvious, the water outlet on the right is larger than the water outlet on the left, and the vibration amplitude is larger than the left, so it is installed in the middle of the left water inlet pipe, and vibration can be detected on both sides of the water pipe.

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[[image:1730455270496-704.png||height="334" width="443"]][[image:1730455276533-958.png||height="328" width="500"]]

== 11.2 Appendix 2: Install LHT65N-VIB to detect the number of times the toilet is used ==

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The case setting is: AT+VIBMOD=1,120,5

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It means that if the vibration exceeds 120 seconds, an alarm message will be issued. When the vibration stops for more than 5 seconds, the number of vibrations will be +1

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When the toilet vibrates for only 100 seconds each time it is flushed, if the vibration exceeds 120 seconds, it is an abnormal situation.

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The data starts to rise after 8 o'clock, and the toilet sensor is working normally

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The data of the toilet is flat and there is no abnormality during the lunch break from 12 noon to 13:30

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The data stops rising at 18 o'clock when the work is over

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[[image:image-20241101181711-4.png||height="330" width="562"]]

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A manual alarm test is performed once at noon.

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[[image:image-20241101182128-5.png||height="257" width="574"]]

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Toilet installation example:

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Fix the probe to the water inlet pipe of the toilet with a cable tie. When someone uses the toilet, the toilet will pump water and LHT65-VIB will start to detect water pipe vibration. Note: LHT65-VIB cannot be immersed in water. Please make waterproof work if necessary.

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[[image:1730456660670-493.png||height="423" width="550"]][[image:1730456665166-826.png||height="416" width="555"]]

Wiki source code of LHT65N-VIB LoRaWAN Vibration Sensor Manual

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