LHT65-PIR Temperature/Humidity/PIR Sensor User Manual

The Dragino (% style="color:blue" %)**LHT65N-PIR Temperature, Humidity & PIR sensor**(%%) is a Long Range LoRaWAN Sensor.It includes a (% style="color:blue" %)**built-in Temperature & Humidity sensor**(%%) and has an (% style="color:blue" %)**external PIR Probe**(%%)**.** LHT65N-PIR can detect environment Temperature & Humdity, it also detects (% style="color:blue" %)**People Activity**(%%) via PIR probe and them send these info to LoRaWAN IoT Server.

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The LHT65N-PIR 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. It targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, building automation, and so on.

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LHT65N-PIR has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) which can be used for more than 5 years*.

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LHT65N-PIR supports (% style="color:blue" %)**wireless configure & OTA update**(%%) which make user easy to use.

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LHT65N-PIR is fully compatible with (% style="color:blue" %)**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 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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* AT Commands to change parameters

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* Remote configure parameters via LoRaWAN Downlink

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* Support wireless OTA update firmware

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* Firmware upgradeable via program port

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* Built-in 2400mAh battery for up to 5 years of use.

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* Built-in Temperature & Humidity sensor

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* External PIR Sensor

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* Tri-color LED to indicate working status(% style="display:none" %)

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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: < 0.02 °C/yr

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* Operating Range: 0 ~~ 96 %RH

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(% class="mark" style="color:#037691" %)**External PIR Sensor:**

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* (% class="mark" %)Base on BH1750 Illumination Sensor

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* (% class="mark" %)Cable Length : 50cm

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* (% class="mark" %)Resolution: 1 lx

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* (% class="mark" %)Range: 0-65535 lx

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* (% class="mark" %)Operating Range: -40 °C ~~ 85 °C

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= 2. Connect LHT65N-PIR to IoT Server =

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

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

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If LHT65N-PIR is within the coverage of this LoRaWAN network. LHT65N-PIR can join the LoRaWAN network automatically. After successfully joining, LHT65N-PIR will start to measure environment temperature, humidity & people activity, 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-PIR? ==

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The LHT65N-PIR has two working modes:

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

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* (% style="color:blue" %)**Working Mode**(%%): In this mode, LHT65N-PIR 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-PIR will be in STOP mode (IDLE mode), in STOP mode, the PIR sensor is still working to detect people activity in low power consumption.

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The LHT65N-PIR 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:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N-E5%20LoRaWAN%20Temperature_Humidity%20%26%20Illuminance%20Sensor%20User%20Manual/WebHome/image-20220515123819-1.png?width=317&height=379&rev=1.1||alt="image-20220515123819-1.png" height="379" width="317"]]

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[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LHT65N-E5%20LoRaWAN%20Temperature_Humidity%20%26%20Illuminance%20Sensor%20User%20Manual/WebHome/image-20220525110604-2.png?rev=1.1||alt="image-20220525110604-2.png"]]

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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-20221224101636-1.png||height="435" width="715"]]

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Assume the LPS8v2 is already set to connect to [[TTN V3 network>>url:https://eu1.cloud.thethings.network||_mstvisible="2"]], So it provides network coverage for LHT65N-PIR. Next we need to add the LHT65N-PIR device in TTN V3:

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

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

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

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[[image:image-20220617150003-1.jpeg||_mstalt="5426434"]]

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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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[[image:image-20220522232916-3.png||_mstalt="430495"]]

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[[image:image-20220522232932-4.png||_mstalt="430157"]]

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[[image:image-20220522232954-5.png||_mstalt="431847"]]

(% style="color:red" %)**Note: LHT65N-E5 use same payload decoder as LHT65.**

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[[image:image-20220522233026-6.png||_mstalt="429403"]]

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Input APP EUI, APP KEY and DEV EUI:

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[[image:image-20220522233118-7.png||_mstalt="430430"]]

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=== 2.3.2 Step 2: Activate LHT65N-E5 by pressing the ACT button for more than 5 seconds. ===

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Use ACT button to activate LHT65N-E5 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-20220522233300-8.png||_mstalt="428389" height="219" width="722"]]

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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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(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:390px" %)

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|=(% style="width: 60px;" %)(((

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**Size(bytes)**

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)))|=(% style="width: 30px;" %)(((

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**2**

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)))|=(% style="width: 100px;" %)(((

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**2**

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)))|=(% style="width: 100px;" %)(((

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**2**

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)))|=(% style="width: 50px;" %)(((

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**1**

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)))|=(% style="width: 50px;" %)(((

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**4**

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)))

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|(% style="width:97px" %)(((

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**Value**

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)))|(% style="width:39px" %)(((

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[[BAT>>||anchor="H2.4.2BAT-BatteryInfo"]]

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)))|(% style="width:100px" %)(((

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(((

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[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]

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)))|(% style="width:77px" %)(((

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(((

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[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]

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)))

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)))|(% style="width:47px" %)(((

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[[Ext>>||anchor="H2.4.5Ext23"]] #

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)))|(% style="width:51px" %)(((

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[[Ext value>>||anchor="H2.4.6Extvalue"]]

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* The First 6 bytes: has fix meanings for every LHT65N-E5.

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* The 7th byte (EXT #): defines the external sensor model. It can be 0x05 or 0x09 for LHT65N-E5

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* The 8^^th^^ ~~ 9^^th^^ byte: Illuminance. Range: 0-65535 lx.

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* The 10th ~~ 11th byte: Reserve, always 0xFFFF

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=== 2.4.1 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-E5 decoder in TTNv3 for friendly reading.

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Below is the position to put the decoder and LHT65N-E5 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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=== 2.4.2 BAT-Battery Info ===

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These two bytes of BAT include the battery state and the actually voltage

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[[image:image-20220523152839-18.png||_mstalt="457613"]]

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[[image:image-20220522235639-1.png||_mstalt="431392" height="139" width="727"]]

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Check the battery voltage for LHT65N-E5.

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* BAT status=(0Xcba4>>14)&0xFF=11(B)，very good

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* Battery Voltage =0xCBF6&0x3FFF=0x0BA4=2980mV

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=== 2.4.3 Built-in Temperature ===

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[[image:image-20220522235639-2.png||_mstalt="431756" height="138" width="722"]]

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* Temperature: 0x0ABB/100=27.47℃

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[[image:image-20220522235639-3.png||_mstalt="432120"]]

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* Temperature: (0xF5C6-65536)/100=-26.18℃

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=== 2.4.4 Built-in Humidity ===

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[[image:image-20220522235639-4.png||_mstalt="432484" height="138" width="722"]]

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* Humidity: 0x025C/10=60.4%

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=== 2.4.5 Ext value ===

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==== 2.4.5.1 Ext~=0x05, Illuminance Sensor ====

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[[image:image-20221224161634-2.png||height="138" width="851"]]

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* Illumination=0x005E=94 lux

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The last 2 bytes of data are meaningless

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[[image:image-20221224161725-3.png]]

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* When the sensor is not connected or not connected properly, will show "NULL"

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The last 2 bytes of data are meaningless

==== 2.4.5.2 Ext~=0x85, E5 sensor with Unix Timestamp ====

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Timestamp mode is designed for LHT65N-E5 with E3 probe, it will send the uplink payload with Unix timestamp. With the limitation of 11 bytes (max distance of AU915/US915/AS923 band), the time stamp mode will be lack of BAT voltage field, instead, it shows the battery status. The payload is as below:

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(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:535px" %)

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|=(% style="width: 88px;" %)(((

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**Size(bytes)**

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)))|=(% style="width: 93px;" %)(((

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**2**

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)))|=(% style="width: 94px;" %)(((

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**2**

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)))|=(% style="width: 117px;" %)(((

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**2**

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)))|=(% style="width: 54px;" %)(((

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**1**

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)))|=(% style="width: 79px;" %)(((

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**4**

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)))

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|(% style="width:88px" %)(((

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**Value**

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)))|(% style="width:93px" %)(((

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[[External temperature>>||anchor="H4.2SetExternalSensorMode"]]

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)))|(% style="width:94px" %)(((

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[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]

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)))|(% style="width:117px" %)(((

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BAT Status &

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Illumination

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)))|(% style="width:54px" %)(((

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Status & Ext

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)))|(% style="width:79px" %)(((

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[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]

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)))

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* **Battery status & Built-in Humidity**

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(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:461px" %)

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|=(% style="width: 67px;" %)Bit(bit)|=(% style="width: 256px;" %)[15:14]|=(% style="width: 132px;" %)[11:0]

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|(% style="width:67px" %)Value|(% style="width:256px" %)(((

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BAT Status

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00(b): Ultra Low ( BAT <= 2.50v)

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01(b): Low (2.50v <=BAT <= 2.55v)

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10(b): OK (2.55v <= BAT <=2.65v)

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11(b): Good (BAT >= 2.65v)

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)))|(% style="width:132px" %)(((

Illumination

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* **Status & Ext Byte**

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(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:500px" %)

* (% style="color:blue" %)**Poll Message Flag**:(%%) 1: This message is a poll message reply, 0: means this is a normal uplink.

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* (% style="color:blue" %)**Sync time OK**: (%%) 1: Set time ok，0: N/A. After time SYNC request is sent, LHT65N-E5 will set this bit to 0 until got the time stamp from the application server.

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* (% style="color:blue" %)**Unix Time Request**:(%%) 1: Request server downlink Unix time, 0 : N/A. In this mode, LHT65N-E5 will set this bit to 1 every 10 days to request a time SYNC. (AT+SYNCMOD to set this)

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== 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"]]

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-20221224161935-5.png||height="523" width="409"]]

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[[image:image-20221224161957-6.png||height="306" width="852"]]

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== 2.6 Datalog Feature ==

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Datalog Feature is to ensure IoT Server can get all sampling data from Sensor even if the LoRaWAN network is down. For each sampling, LHT65N-E5 will store the reading for future retrieving purposes. There are two ways for IoT servers to get datalog from LHT65N-E5.

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=== 2.6.1 Ways to get datalog via LoRaWAN ===

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There are two methods:

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(% style="color:blue" %)**Method 1:** (%%)IoT Server sends a downlink LoRaWAN command to [[poll the value>>||anchor="H2.6.4Pollsensorvalue"]] for specified time range.

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(% style="color:blue" %)**Method 2: **(%%)Set [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]], LHT65N-E5 will wait for ACK for every uplink, when there is no LoRaWAN network, LHT65N-E5 will mark these records with non-ack messages and store the sensor data, and it will send all messages (10s interval) after the network recovery.

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(% style="color:red" %)**Note for method 2:**

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* a) LHT65N-E5 will do an ACK check for data records sending to make sure every data arrive server.

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* b) LHT65N-E5 will send data in **CONFIRMED Mode** when PNACKMD=1, but LHT65N-E5 won't re-transmit the packet if it doesn't get ACK, it will just mark it as a NONE-ACK message. In a future uplink if LHT65N-E5 gets a ACK, LHT65N-E5 will consider there is a network connection and resend all NONE-ACK Message.

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Below is the typical case for the auto-update datalog feature (Set PNACKMD=1)

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[[image:image-20220703111700-2.png||_mstalt="426244" height="381" width="1119"]]

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=== 2.6.2 Unix TimeStamp ===

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LHT65N-E5 uses Unix TimeStamp format based on

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[[image:image-20220523001219-11.png||_mstalt="450450" height="97" width="627"]]

User can get this time from link: [[https:~~/~~/www.epochconverter.com/>>url:https://www.epochconverter.com/]] :

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Below is the converter example

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[[image:image-20220523001219-12.png||_mstalt="450827" height="298" width="720"]]

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So, we can use AT+TIMESTAMP=1611889405 or downlink 3060137afd00 to set the current time 2021 – Jan ~-~- 29 Friday 03:03:25

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=== 2.6.3 Set Device Time ===

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(% style="color:blue" %)**There are two ways to set device's time:**

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**1. Through LoRaWAN MAC Command (Default settings)**

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User need to set SYNCMOD=1 to enable sync time via MAC command.

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Once LHT65N-E5 Joined LoRaWAN network, it will send the MAC command (DeviceTimeReq) and the server will reply with (DeviceTimeAns) to send the current time to LHT65N-E5. If LHT65N-E5 fails to get the time from the server, LHT65N-E5 will use the internal time and wait for next time request (AT+SYNCTDC to set the time request period, default is 10 days).

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(% style="color:red" %)**Note: LoRaWAN Server need to support LoRaWAN v1.0.3(MAC v1.0.3) or higher to support this MAC command feature, Chirpstack,TTN V3 v3 and loriot support but TTN V3 v2 doesn't support. If server doesn't support this command, it will through away uplink packet with this command, so user will lose the packet with time request for TTN V3 v2 if SYNCMOD=1.**

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**2. Manually Set Time**

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User needs to set SYNCMOD=0 to manual time, otherwise, the user set time will be overwritten by the time set by the server.

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=== 2.6.4 Poll sensor value ===

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User can poll sensor value based on timestamps from the server. Below is the downlink command.

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[[image:image-20220523152302-15.png||_mstalt="451581"]]

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Timestamp start and Timestamp end use Unix TimeStamp format as mentioned above. Devices will reply with all data log during this time period, use the uplink interval.

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For example, downlink command (% _mstmutation="1" %)**31 5FC5F350 5FC6 0160 05**(%%)

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Is to check 2020/12/1 07:40:00 to 2020/12/1 08:40:00’s data

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Uplink Internal =5s，means LHT65N-E5 will send one packet every 5s. range 5~~255s.

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=== 2.6.5 Datalog Uplink payload ===

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The Datalog poll reply uplink will use below payload format.

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**Retrieval data payload:**

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(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:480px" %)

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|=(% style="width: 60px;" %)(((

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**Size(bytes)**

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|(% style="width:97px" %)**Value**|(% style="width:123px" %)[[External sensor data>>||anchor="H2.4.6Extvalue"]]|(% style="width:108px" %)[[Built In Temperature>>||anchor="H2.4.3Built-inTemperature"]]|(% style="width:133px" %)[[Built-in Humidity>>||anchor="H2.4.4Built-inHumidity"]]|(% style="width:159px" %)Poll message flag & Ext|(% style="width:80px" %)[[Unix Time Stamp>>||anchor="H2.6.2UnixTimeStamp"]]

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**Poll message flag & Ext:**

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[[image:image-20221006192726-1.png||_mstalt="430508" height="112" width="754"]]

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(% style="color:blue" %)**No ACK Message**(%%): 1: This message means this payload is fromn Uplink Message which doesn't get ACK from the server before ( for [[PNACKMD=1>>||anchor="H4.13AutoSendNone-ACKmessages"]] feature)

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(% style="color:blue" %)**Poll Message Flag**(%%): 1: This message is a poll message reply.

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* Poll Message Flag is set to 1.

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* Each data entry is 11 bytes, to save airtime and battery, devices will send max bytes according to the current DR and Frequency bands.

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For example, in US915 band, the max payload for different DR is:

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(% style="color:blue" %)**a) DR0:** (%%)max is 11 bytes so one entry of data

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(% style="color:blue" %)**b) DR1:**(%%) max is 53 bytes so devices will upload 4 entries of data (total 44 bytes)

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(% style="color:blue" %)**c) DR2:**(%%) total payload includes 11 entries of data

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(% style="color:blue" %)**d) DR3: **(%%)total payload includes 22 entries of data.

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If devise doesn't have any data in the polling time. Device will uplink 11 bytes of 0

**Example:**

If LHT65N-E5 has below data inside Flash:

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[[image:image-20220523144455-1.png||_mstalt="430040" height="335" width="735"]]

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If user sends below downlink command: (% style="background-color:yellow" %)3160065F9760066DA705

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Where : Start time: 60065F97 = time 21/1/19 04:27:03

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Stop time: 60066DA7= time 21/1/19 05:27:03

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**LHT65N-E5 will uplink this payload.**

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[[image:image-20220523001219-13.png||_mstalt="451204" height="421" style="text-align:left" width="727"]]

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__**7FFF089801464160065F97**__ **__7FFF__ __088E__ __014B__ __41__ __60066009__** 7FFF0885014E41600660667FFF0875015141600662BE7FFF086B015541600665167FFF08660155416006676E7FFF085F015A41600669C67FFF0857015D4160066C1E

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Where the first 11 bytes is for the first entry:

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7FFF089801464160065F97

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Ext sensor data=0x7FFF/100=327.67

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Temp=0x088E/100=22.00

Hum=0x014B/10=32.6

poll message flag & Ext=0x41,means reply data,Ext=1

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Unix time is 0x60066009=1611030423s=21/1/19 04:27:03

== 2.7 Alarm Mode ==

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when the device is in alarm mode, it checks the built-in sensor temperature for a short time. if the temperature exceeds the preconfigured range, it sends an uplink immediately.

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(% style="color:red" %)**Note: alarm mode adds a little power consumption, and we recommend extending the normal read time when this feature is enabled.**

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=== 2.7.1 ALARM MODE ===

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(% class="box infomessage" %)

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**AT+WMOD=1**: Enable/disable alarm mode. (0: Disabled, 1: Enabled Temperature Alarm for onboard temperature sensor)

)))

(((

**AT+CITEMP=1**: The interval between checking the alarm temperature. (In minutes)

)))

(((

**AT+ARTEMP**: Gets or sets the alarm range of the internal temperature sensor

)))

(((

(% _mstmutation="1" %)**AT+ARTEMP=？ **(%%): Gets the alarm range of the internal temperature sensor(% style="display:none" %)

)))

(((

**AT+ARTEMP=45,105**: Set the internal temperature sensor alarm range from 45 to 105.

)))

)))

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

Total bytes: 8 bytes

**Example:**AA0100010001003C

WMOD=01

CITEMP=0001

TEMPlow=0001

TEMPhigh=003C

== 2.8 LED Indicator ==

608

609

610

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

611

612

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

613

614

In a normal working state:

615

616

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

617

BLUE LED when external sensor is connected.

618

* RED LED when external sensor is not connected

619

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

620

621

== 2.9 installation ==

622

623

624

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

625

626

627

= 3. Sensors and Accessories =

628

629

== 3.1 E2 Extension Cable ==

630

631

632

[[image:image-20220619092222-1.png||_mstalt="429533" height="182" width="188"]][[image:image-20220619092313-2.png||_mstalt="430222" height="182" width="173"]]

633

634

635

**1m long breakout cable for LHT65N-E5. Features:**

* (((

Use for AT Command

)))

* (((

Update firmware for LHT65N-E5

642

)))

643

* (((

644

Exposed All pins from the LHT65N Type-C connector.

)))

[[image:image-20220619092421-3.png||_mstalt="430547" height="371" width="529"]]

651

652

653

= 4. Configure LHT65N-E5 via AT command or LoRaWAN downlink =

(((

Use can configure LHT65N-E5 via AT Command or LoRaWAN Downlink.

)))

* (((

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

)))

* (((

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

)))

(((

There are two kinds of commands to configure LHT65N-E5, they are:

)))

* (((

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

)))

(((

These commands are to configure:

)))

1. (((

General system settings like: uplink interval.

682

)))

683

1. (((

684

LoRaWAN protocol & radio-related commands.

)))

(((

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]]

)))

* (((

(% style="color:#4f81bd" %)**Commands special design for LHT65N-E5**

)))

(((

These commands are only valid for LHT65N-E5, as below:

)))

== 4.1 Set Transmit Interval Time ==

701

702

703

Feature: Change LoRaWAN End Node Transmit Interval.

704

705

706

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

707

708

[[image:image-20220523150701-2.png||_mstalt="427453"]]

709

710

711

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

712

713

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

714

715

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

716

717

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

718

719

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

720

721

== 4.2 Currently only supports E5 ==

722

723

724

Feature: Set device password, max 9 digits

725

726

727

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

728

729

(% border="1" cellspacing="10" style="background-color:#ffffcc; color:green; width:510px" %)

730

|Command Example|Function|Response

731

|AT+EXT=?|Get or Set external sensor model|(((

5

OK

)))

|AT+EXT=5|(% colspan="2" %)Set external sensor mode to 5

737

738

(% style="color:#4f81bd" %)**Downlink Command:0xA2**

Total bytes: 2 bytes

**Example:**

* 0xA205: Set external sensor type to E5

746

747

== 4.3 Set to sleep mode ==

748

749

750

Feature: Set device to sleep mode

751

752

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

753

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

754

755

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

756

757

[[image:image-20220523151218-7.png||_mstalt="430703"]]

758

759

760

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

761

762

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

763

764

== 4.4 Set system time ==

765

766

767

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

768

769

770

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

771

772

[[image:image-20220523151253-8.png||_mstalt="430677"]]

773

774

775

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

776

777

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

778

779

780

== 4.5 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.

)))

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

794

795

[[image:image-20220523151336-9.png||_mstalt="431717"]]

796

797

798

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

799

800

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

801

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

802

803

804

== 4.6 Set Time Sync Interval ==

805

806

807

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

808

809

810

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

811

812

[[image:image-20220523151411-10.png||_mstalt="449696"]]

813

814

815

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

816

817

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

818

819

820

== 4.7 Print data entries base on page. ==

821

822

823

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

824

825

826

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

827

828

[[image:image-20220523151450-11.png||_mstalt="451035"]]

829

830

831

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

832

833

No downlink commands for feature

834

835

836

== 4.8 Print last few data entries. ==

837

838

839

Feature: Print the last few data entries

840

841

842

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

843

844

[[image:image-20220523151524-12.png||_mstalt="452101"]]

845

846

847

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

848

849

No downlink commands for feature

850

851

852

== 4.9 Clear Flash Record ==

853

854

855

Feature: Clear flash storage for data log feature.

856

857

858

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

859

860

[[image:image-20220523151556-13.png||_mstalt="454129"]]

861

862

863

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

864

865

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

866

867

== 4.10 Auto Send None-ACK messages ==

868

869

870

Feature: LHT65N-E5 will wait for ACK for each uplink, If LHT65N-E5 doesn't get ACK from the IoT server, it will consider the message doesn't arrive server and store it. LHT65N-E5 keeps sending messages in normal periodically. Once LHT65N-E5 gets ACK from a server, it will consider the network is ok and start to send the not-arrive message.

871

872

873

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

874

875

The default factory setting is 0

876

877

(% border="1" cellspacing="4" style="background-color:#ffffcc; color:green; width:367px" %)

878

|=(% style="width: 158px;" %)**Command Example**|=(% style="width: 118px;" %)**Function**|=(% style="width: 87px;" %)**Response**

879

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

880

881

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

882

883

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

884

885

= 5. Battery & How to replace =

886

887

== 5.1 Battery Type ==

(((

LHT65N-E5 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.

896

897

898

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

899

)))

900

901

The minimum Working Voltage for the LHT65N-E5 is ~~ 2.5v. When battery is lower than 2.6v, it is time to change the battery.

902

903

904

== 5.2 Replace Battery ==

905

906

907

LHT65N-E5 has two screws on the back, Unscrew them, and changing the battery inside is ok. The battery is a general CR17450 battery (3.0v). Any brand should be ok.

908

909

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

910

911

912

== 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:

917

[[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-E5 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 use AT Command? ==

929

930

931

LHT65N-E5 supports AT Command set.User can use a USB to TTL adapter plus the Program Cable to connect to LHT65 for using AT command, as below.

932

933

934

[[image:image-20220615153355-1.png||_mstalt="430222"]]

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

(((

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-E5. The AT commands are disable by default and need to enter password (default:(% style="color:green" %)**123456**(% style="color:red" %))(%%) 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.

944

)))

945

946

[[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]

947

948

AT Command List is as below:

949

950

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

AT+<CMD> : Run <CMD>

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

955

956

AT+<CMD>=? : Get the value

957

958

AT+DEBUG: Set more info output

959

960

ATZ: Trig a reset of the MCU

961

962

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

963

964

AT+DEUI: Get or Set the Device EUI

965

966

AT+DADDR: Get or Set the Device Address

967

968

AT+APPKEY: Get or Set the Application Key

969

970

AT+NWKSKEY: Get or Set the Network Session Key

971

972

AT+APPSKEY: Get or Set the Application Session Key

973

974

AT+APPEUI: Get or Set the Application EUI

975

976

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

977

978

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

979

980

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

981

982

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

983

984

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

985

986

AT+RX2FQ: Get or Set the Rx2 window frequency

987

988

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

989

990

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

991

992

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

993

994

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

995

996

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

997

998

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

999

1000

AT+NWKID: Get or Set the Network ID

1001

1002

AT+FCU: Get or Set the Frame Counter Uplink

1003

1004

AT+FCD: Get or Set the Frame Counter Downlink

1005

1006

AT+CLASS: Get or Set the Device Class

1007

1008

AT+JOIN: Join network

1009

1010

AT+NJS: Get the join status

1011

1012

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

1013

1014

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

1015

1016

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

1017

1018

AT+RECV: Print last received data in raw format

1019

1020

AT+VER: Get current image version and Frequency Band

1021

1022

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

1023

1024

AT+CFS: Get confirmation status of the last AT+SEND (0-1)

1025

1026

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

1027

1028

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

1029

1030

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

1031

1032

AT+PORT: Get or set the application port

1033

1034

AT+DISAT: Disable AT commands

1035

1036

AT+PWORD: Set password, max 9 digits

1037

1038

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

1039

1040

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

1041

1042

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

1043

1044

AT+PLDTA: Print the last few sets of data

1045

1046

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

1047

1048

AT+SLEEP: Set sleep mode

1049

1050

AT+EXT: Get or Set external sensor model

1051

1052

AT+BAT: Get the current battery voltage in mV

1053

1054

AT+CFG: Print all configurations

1055

1056

AT+WMOD: Get or Set Work Mode

1057

1058

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

1059

1060

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

1061

1062

AT+SETCNT: Set the count at present

1063

1064

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

1065

1066

AT+RPL: Get or set response level

1067

1068

AT+TIMESTAMP: Get or Set UNIX timestamp in second

1069

1070

AT+LEAPSEC: Get or Set Leap Second

1071

1072

AT+SYNCMOD: Get or Set time synchronization method

1073

1074

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

1075

1076

AT+PID: Get or set the PID

1077

1078

1079

== 6.2 Where to use AT commands and Downlink commands ==

**AT commands：**

[[image:image-20220620153708-1.png||_mstalt="429806" height="603" width="723"]]

1085

1086

1087

**Downlink commands:**

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

1092

1093

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

(% style="color:blue" %)**Helium：**

1098

1099

[[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**

1104

1105

1106

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

1107

1108

1109

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

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

1114

1115

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

1116

1117

1118

== 6.3 How to change the uplink interval？ ==

1119

1120

1121

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);"]]

[[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]

1126

1127

1128

== 6.4 How to use TTL-USB to connect PC to upgrade firmware? ==

1129

1130

1131

[[image:image-20220615153355-1.png||_mstalt="430222"]]

1132

1133

1134

(% style="color:blue" %)**Step1**(%%): Install TremoProgrammer first.

1135

1136

[[image:image-20220615170542-5.png||_mstalt="430638"]]

(% _mstmutation="1" style="color:blue" %)**Step2**(%%)：wiring method.(% style="display:none" %)

1141

1142

First connect the four lines；(% style="display:none" %)

1143

1144

[[image:image-20220621170938-1.png||_mstalt="431340" height="413" width="419"]]，(% style="display:none" %)

1145

1146

1147

Then use DuPont cable to short circuit port3 and port1, and then release them, so that the device enters bootlaod mode.

1148

1149

[[image:image-20220621170938-2.png||_mstalt="431704"]]

(% style="color:blue" %)**Step3：**(%%)Select the device port to be connected, baud rate and bin file to be downloaded.

1154

1155

[[image:image-20220615171334-6.png||_mstalt="431028"]]

1156

1157

1158

Click the (% style="color:blue" %)**start**(%%) button to start the firmware upgrade.

1159

1160

1161

When this interface appears, it indicates that the download has been completed.

1162

1163

[[image:image-20220620160723-8.png||_mstalt="430703"]]

1164

1165

1166

Finally, unplug the DuPont cable on port4, and then use the DuPont cable to short circuit port3 and port1 to reset the device.

[[image:image-20220615154519-3.png||_mstalt="431925" height="672" width="807"]]

= 7. Order Info =

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

1177

1178

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

1179

1180

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

1181

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

1182

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

1183

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

1184

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

1185

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

1186

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

1187

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

= 8. Packing Info =

**Package Includes**:

1193

1194

* LHT65N-PIR Temperature/Humidity/PIR Sensor x 1

1195

1196

**Dimension and weight**:

1197

1198

* Device Size: 10 x 10 x 3.5 mm

1199

* Device Weight: 120.5g

1200

1201

= 9. Reference material =

1202

1203

1204

* [[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:

1210

1211

(1) This device may not cause harmful interference；

1212

1213

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

Wiki source code of LHT65-PIR Temperature/Humidity/PIR Sensor User Manual

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