LHT65N-E5 LoRaWAN Temperature_Humidity & Illuminance Sensor User Manual

The Dragino (% style="color:blue" %)**LHT65N-E5 Temperature, Humidity & Illuminance 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 Illuminance **(%%)** (% style="color:blue" %)sensor(%%).**

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The LHT65N-E5 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-E5 has a (% style="color:blue" %)**built-in 2400mAh non-chargeable battery**(%%) which can be used for more than 10 years*.

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LHT65N-E5 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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(% style="color:blue" %)*(%%)** **The actual battery life depends on how often to send data, please see battery analyzer chapter.

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(% style="display:none" %) (%%)

== 1.2 Features ==

* Wall mountable

* 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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* Firmware upgradeable via program port

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* Built-in 2400mAh battery for up to 10 years of use.

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* Built-in Temperature & Humidity sensor

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* External Illuminance Sensor

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* Tri-color LED to indicate working status

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* Datalog feature to save sensor data when no LoRaWAN network

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(% style="display:none" %)

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

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* Base on BH1750 Illumination Sensor

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* Cable Length : 50cm

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* Resolution: 1 lx

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* Range: 0-65535 lx

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* Operating Range: -40 °C ~~ 85 °C

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= 2. Connect LHT65N-E5 to IoT Server =

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== 2.1 How does LHT65N-E5 work? ==

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LHT65N-E5 is configured as LoRaWAN OTAA Class A sensor by default. Each LHT65N-E5 is shipped with a worldwide unique set of OTAA keys. To use LHT65N-E5 in a LoRaWAN network, first, we need to put the OTAA keys in LoRaWAN Network Server and then activate LHT65N-E5.

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If LHT65N-E5 is within the coverage of this LoRaWAN network. LHT65N-E5 can join the LoRaWAN network automatically. After successfully joining, LHT65N-E5 will start to measure environment temperature, humidity & illumination, 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-E5? ==

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The LHT65N-E5 has two working modes:

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(% style="color:blue" %)**Deep Sleep Mode**(%%): LHT65N-E5 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-E5 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-E5 will be in STOP mode (IDLE mode), in STOP mode, LHT65N-E5 has the same power consumption as Deep Sleep mode.

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The LHT65N-E5 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-20220515123819-1.png||_mstalt="430742" height="379" width="317"]]

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[[image:image-20220525110604-2.png||_mstalt="427531"]]

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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-E5. Next we need to add the LHT65N-E5 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-E5.

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Each LHT65N-E5 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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|(% 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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[[Built-In Temperature>>||anchor="H2.4.3Built-inTemperature"]]

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

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

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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%

=== 2.4.5 Ext # ===

Bytes for External Sensor:

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=== 2.4.6 Ext value ===

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==== 2.4.6.1 Ext~=0x05, Normal Uplink for Illumination value ====

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[[image:image-20221224102618-3.png||height="187" width="1184"]]

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* Illumination=0x005E=94 lux

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The last 2 bytes of data are meaningless when EXT=0x05

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Notice: When the external probe is not connected or not connected properly, Illumination will show "NULL"

==== 2.4.6.2 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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**2**

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**2**

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**2**

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**1**

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**4**

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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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* **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-20221224103948-5.png]]

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

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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)

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

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

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

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

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

Total bytes: 8 bytes

**Example:**AA0100010001003C

WMOD=01

CITEMP=0001

TEMPlow=0001

TEMPhigh=003C

== 2.8 LED Indicator ==

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

644

645

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

646

647

In a normal working state:

648

649

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

650

BLUE LED when external sensor is connected.

651

* RED LED when external sensor is not connected

652

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

653

654

== 2.9 installation ==

655

656

657

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

658

659

660

= 3. Sensors and Accessories =

661

662

== 3.1 E2 Extension Cable ==

663

664

665

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

666

667

668

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

* (((

Use for AT Command

)))

* (((

Update firmware for LHT65N-E5

675

)))

676

* (((

677

Exposed All pins from the LHT65N Type-C connector.

)))

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

= 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.

716

)))

717

1. (((

718

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 ==

735

736

737

Feature: Change LoRaWAN End Node Transmit Interval.

738

739

740

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

741

742

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

743

744

745

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

746

747

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

748

749

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

750

751

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

752

753

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

754

755

== 4.2 Set Password ==

756

757

758

Feature: Set device password, max 9 digits

759

760

761

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

762

763

[[image:image-20220523151052-5.png||_mstalt="428623"]]

764

765

766

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

767

768

No downlink command for this feature.

769

770

771

== 4.3 Quit AT Command ==

772

773

774

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

775

776

777

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

778

779

[[image:image-20220523151132-6.png||_mstalt="428649"]]

780

781

782

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

783

784

No downlink command for this feature.

785

786

787

== 4.4 Set to sleep mode ==

788

789

790

Feature: Set device to sleep mode

791

792

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

793

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

794

795

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

796

797

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

798

799

800

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

801

802

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

803

804

== 4.5 Set system time ==

805

806

807

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

808

809

810

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

811

812

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

813

814

815

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

816

817

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

818

819

820

== 4.6 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:**

834

835

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

836

837

838

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

839

840

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

841

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

842

843

844

== 4.7 Set Time Sync Interval ==

845

846

847

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

848

849

850

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

851

852

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

853

854

855

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

856

857

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

858

859

860

== 4.8 Print data entries base on page. ==

861

862

863

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

864

865

866

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

867

868

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

869

870

871

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

872

873

No downlink commands for feature

874

875

876

== 4.9 Print last few data entries. ==

877

878

879

Feature: Print the last few data entries

880

881

882

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

883

884

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

885

886

887

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

888

889

No downlink commands for feature

890

891

892

== 4.10 Clear Flash Record ==

893

894

895

Feature: Clear flash storage for data log feature.

896

897

898

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

899

900

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

901

902

903

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

904

905

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

906

907

== 4.11 Auto Send None-ACK messages ==

908

909

910

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.

911

912

913

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

914

915

The default factory setting is 0

916

917

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

918

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

919

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

920

921

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

922

923

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

924

925

926

= 5. Battery & How to replace =

927

928

== 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.

937

938

939

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

940

)))

941

942

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.

943

944

945

== 5.2 Replace Battery ==

946

947

948

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.

949

950

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

951

952

953

== 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:

958

[[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? ==

970

971

972

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.

973

974

975

[[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.

985

)))

986

987

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

988

989

AT Command List is as below:

990

991

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

AT+<CMD> : Run <CMD>

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

996

997

AT+<CMD>=? : Get the value

998

999

AT+DEBUG: Set more info output

1000

1001

ATZ: Trig a reset of the MCU

1002

1003

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

1004

1005

AT+DEUI: Get or Set the Device EUI

1006

1007

AT+DADDR: Get or Set the Device Address

1008

1009

AT+APPKEY: Get or Set the Application Key

1010

1011

AT+NWKSKEY: Get or Set the Network Session Key

1012

1013

AT+APPSKEY: Get or Set the Application Session Key

1014

1015

AT+APPEUI: Get or Set the Application EUI

1016

1017

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

1018

1019

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

1020

1021

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

1022

1023

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

1024

1025

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

1026

1027

AT+RX2FQ: Get or Set the Rx2 window frequency

1028

1029

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

1030

1031

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

1032

1033

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

1034

1035

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

1036

1037

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

1038

1039

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

1040

1041

AT+NWKID: Get or Set the Network ID

1042

1043

AT+FCU: Get or Set the Frame Counter Uplink

1044

1045

AT+FCD: Get or Set the Frame Counter Downlink

1046

1047

AT+CLASS: Get or Set the Device Class

1048

1049

AT+JOIN: Join network

1050

1051

AT+NJS: Get the join status

1052

1053

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

1054

1055

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

1056

1057

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

1058

1059

AT+RECV: Print last received data in raw format

1060

1061

AT+VER: Get current image version and Frequency Band

1062

1063

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

1064

1065

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

1066

1067

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

1068

1069

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

1070

1071

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

1072

1073

AT+PORT: Get or set the application port

1074

1075

AT+DISAT: Disable AT commands

1076

1077

AT+PWORD: Set password, max 9 digits

1078

1079

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

1080

1081

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

1082

1083

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

1084

1085

AT+PLDTA: Print the last few sets of data

1086

1087

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

1088

1089

AT+SLEEP: Set sleep mode

1090

1091

AT+EXT: Get or Set external sensor model

1092

1093

AT+BAT: Get the current battery voltage in mV

1094

1095

AT+CFG: Print all configurations

1096

1097

AT+WMOD: Get or Set Work Mode

1098

1099

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

1100

1101

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

1102

1103

AT+SETCNT: Set the count at present

1104

1105

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

1106

1107

AT+RPL: Get or set response level

1108

1109

AT+TIMESTAMP: Get or Set UNIX timestamp in second

1110

1111

AT+LEAPSEC: Get or Set Leap Second

1112

1113

AT+SYNCMOD: Get or Set time synchronization method

1114

1115

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

1116

1117

AT+PID: Get or set the PID

1118

1119

1120

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

**AT commands：**

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

1126

1127

1128

**Downlink commands:**

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

1133

1134

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

(% style="color:blue" %)**Helium：**

1139

1140

[[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**

1145

1146

1147

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

1148

1149

1150

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

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

1155

1156

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

1157

1158

1159

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

1160

1161

1162

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"]]

1168

1169

1170

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

1171

1172

1173

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

1174

1175

1176

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

1177

1178

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

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

1183

1184

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

1185

1186

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

1187

1188

1189

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

1190

1191

[[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.

1196

1197

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

1198

1199

1200

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

1201

1202

1203

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

1204

1205

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

1206

1207

1208

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-E5-XX**

1222

1223

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

1224

1225

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

1226

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

1227

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

1228

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

1229

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

1230

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

1231

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

1232

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

= 8. Packing Info =

**Package Includes**:

1238

1239

* LHT65N-E5 Temperature/Humidity/Illuminance Sensor x 1

1240

1241

**Dimension and weight**:

1242

1243

* Device Size: 10 x 10 x 3.5 mm

1244

* Device Weight: 120.5g

1245

1246

= 9. Reference material =

1247

1248

1249

* [[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:

1255

1256

(1) This device may not cause harmful interference；

1257

1258

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

Wiki source code of LHT65N-E5 LoRaWAN Temperature_Humidity & Illuminance Sensor User Manual

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