Dragino LHT52 - Table of Contents

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LHT52 Temperature & Humidity sensor 2 / 40
1. Introduction .............................................................................................................................. 4
1.1 What is LHT52 Temperature & Humidity Sensor ........................................................................ 4
1.2 Features ...................................................................................................................................... 5
1.3 Specifications .............................................................................................................................. 5
1.4 Power Consumption ................................................................................................................... 5
1.5 Storage & Operation Temperature ............................................................................................. 5
1.6 Applications ................................................................................................................................ 6
2. Operation Mode ....................................................................................................................... 7
2.1 How to activate LHT52? ............................................................................................................. 7
2.2 How it works? ............................................................................................................................. 8
2.3 Example to use for LoRaWAN network ....................................................................................... 8
2.4 Uplink Payload .......................................................................................................................... 11
2.4.1 Uplink FPORT=5, Device Status ....................................................................................... 11
2.4.2 Uplink FPORT=2, Real time sensor value ........................................................................ 12
2.4.3 Uplink FPORT=3, Datalog sensor value ........................................................................... 13
2.4.4 Uplink FPORT=4, DS18B20 ID.......................................................................................... 13
2.4.5 Decoder in TTN V3 .......................................................................................................... 14
2.5 Show data on Datacake ............................................................................................................ 15
2.6 Datalog Feature........................................................................................................................ 21
2.6.1 Unix TimeStamp .............................................................................................................. 21
2.6.2 Poll sensor value ............................................................................................................. 21
2.6.3 Datalog Uplink payload ................................................................................................... 22
2.7 Alarm Mode.............................................................................................................................. 22
2.8 LED Indicator ............................................................................................................................ 25
2.9 Button ....................................................................................................................................... 25
3. Configure LHT52 via AT Command or LoRaWAN Downlink ...................................................... 26
3.1 Downlink Command Set ........................................................................................................... 26
3.2 Set Password ............................................................................................................................ 29
4. Battery Replacement .............................................................................................................. 30
4.1 Battery Type and replace .......................................................................................................... 30
4.2 Power Consumption Analyze .................................................................................................... 31