Dragino LHT65N-E3 User Manual

User Manual for LoRaWAN End Nodes - LHT65N LoRaWAN Temperature & Humidity Sensor Manual
Table of Contents
1. Introduction .......................................................................................................................................................................... 5
1.1 What is LHT65N Temperature & Humidity Sensor .................................................................................................. 5
1.2 Features .......................................................................................................................................................................... 5
1.3 Specification ................................................................................................................................................................... 5
2. Connect LHT65N to IoT Server ....................................................................................................................................... 6
2.1 How does LHT65N work? ........................................................................................................................................... 6
2.2 How to Activate LHT65N? ........................................................................................................................................... 6
2.3 Example to join LoRaWAN network ........................................................................................................................... 7
2.3.1 Step 1: Create Device n TTN ................................................................................................................................ 7
2.3.2 Step 2: Activate LHT65N by pressing the ACT button for more than 5 seconds. .......................................... 12
2.4 Uplink Payload ............................................................................................................................................................. 12
2.4.1 Decoder in TTN V3 ............................................................................................................................................... 13
2.4.2 BAT-Battery Info .................................................................................................................................................... 13
2.4.3 Built-in Temperature ............................................................................................................................................. 14
2.4.4 Built-in Humidity ..................................................................................................................................................... 15
2.4.5 Ext # ........................................................................................................................................................................ 15
2.4.6 Ext value ................................................................................................................................................................. 15
2.5 Show data on Datacake ............................................................................................................................................. 17
2.6 Datalog Feature ........................................................................................................................................................... 20
2.6.1 Ways to get datalog via LoRaWAN .................................................................................................................... 20
2.6.2 Unix TimeStamp .................................................................................................................................................... 20
2.6.3 Set Device Time .................................................................................................................................................... 21
2.6.4 Poll sensor value ................................................................................................................................................... 21
2.6.5 Datalog Uplink payload ........................................................................................................................................ 22
2.7 Alarm Mode ................................................................................................................................................................. 24
2.8 LED Indicator ............................................................................................................................................................... 25
2.9 installation ..................................................................................................................................................................... 25
3. Sensorsand Accessories ................................................................................................................................................ 26
3.1E2 Extension Cable ..................................................................................................................................................... 26
3.2E3 Temperature Probe ............................................................................................................................................... 26
4. Configure LHT65N via AT command or LoRaWAN downlink .................................................................................... 27
4.1 Set Transmit Interval Time ........................................................................................................................................ 27
4.2 Set External Sensor Mode ......................................................................................................................................... 28
4.3 Enable/Disable uplink Temperature probe ID ......................................................................................................... 28
4.4 Set Password .............................................................................................................................................................. 29
4.5 Quit AT Command ...................................................................................................................................................... 29
4.6 Set to sleep mode ....................................................................................................................................................... 30
4.7 Set system time ........................................................................................................................................................... 30
4.8 Set Time Sync Mode .................................................................................................................................................. 30
4.9 Set Time Sync Interval ............................................................................................................................................... 31
4.10 Print data entries base on page. ............................................................................................................................. 31
4.11 Print last few data entries. ....................................................................................................................................... 32
4.12 Clear Flash Record ................................................................................................................................................... 33
4.13 Auto Send None-ACK messages ........................................................................................................................... 33
5. Battery & How to replace ................................................................................................................................................ 34
5.1 Battery Type ................................................................................................................................................................ 34
5.2 Replace Battery ........................................................................................................................................................... 34
5.3 Battery Life Analyze .................................................................................................................................................... 35
6. FAQ .................................................................................................................................................................................... 35
6.1 How to use AT Command? ....................................................................................................................................... 35
6.2 Where to use AT commands and Downlink commands ........................................................................................ 39
6.3How to change the uplink
interval？
...................................................................................................................... 43
6.4How to use TTL-USB to connect a PC to input AT commands? .......................................................................... 44
Page 1 / 56 - last modified by Bei Jinggeng on 2022/07/06 13:48

Dragino LHT65N-E3 Specifications

General

Model	LHT65N-E3
Category	Measuring Instruments
Temperature Accuracy	±0.3 °C
Humidity Accuracy	±3% RH
Communication Protocol	LoRaWAN
LoRaWAN Version	1.0.2
Type	Temperature and Humidity Sensor
Humidity Range	0 ~ 100%RH
Battery Type	Lithium Battery
Battery Life	5 years
Storage Temperature	-40°C to +85°C
Frequency Band	EU868

Summary

Introduction to LHT65N Sensor

What is LHT65N Temperature & Humidity Sensor

Explains the Dragino LHT65N as a Long Range LoRaWAN Sensor with built-in and external sensor capabilities.

Connecting and Activating LHT65N

How the LHT65N Works

Describes the LHT65N's operation as a LoRaWAN OTAA Class A device, its default settings, and data transmission.

Activating the LHT65N Device

Explains the two working modes (Deep Sleep and Working) and how to switch between them using the ACT button.

Example: Joining LoRaWAN Network

Guides on joining the TTN V3 LoRaWAN IoT server with the LHT65N device.

Uplink Payload and Data Interpretation

Uplink Payload Structure

Datalogging, Time Sync, and Alarms

Datalog Feature Overview

Setting Device Time

Alarm Mode Configuration

Device Configuration and Management

Configure LHT65N via AT Command or Downlink

Set Transmit Interval Time

Set Device Password

Explains how to set the device password for AT command access.

Set Device to Sleep Mode

Battery Information and Replacement

How to Replace the Battery

FAQ and Operational Guides

How to Use AT Commands

Explains how to connect to the LHT65N for using AT commands via a USB to TTL adapter.

TTL-USB for AT Commands

Details connecting a PC to the device using TTL-USB for AT command input.

TTL-USB for Firmware Upgrade

Guides on using TTL-USB to connect a PC for performing device firmware upgrades.

USB-Type-C for AT Commands

Explains connecting the device via USB-Type-C to a computer for AT command interaction.

USB-Type-C for Firmware Upgrade

Guides on using USB-Type-C to connect a PC for performing device firmware upgrades.