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LHT52 Temperature & Humidity sensor      5  /  40 
 
1.2 Features 
✓  Wall Attachable. 
✓  LoRaWAN v1.0.3 Class A protocol.   
✓  Built-in Temperature & Humidity sensor 
✓  Optional External Probe 
✓  Frequency Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915   
✓  AT Commands to change parameters 
✓  Remote configure parameters via LoRaWAN Downlink 
✓  Firmware upgradable via program port 
✓  Support 2 x AAA LR03 batteries.   
✓  Datalog feature 
✓  IP Rating: IP52 
 
 
1.3 Specifications 
Built-in Temperature Sensor:   
➢  Resolution: 0.01 °C  
➢  Accuracy Tolerance: Typ  °C  
➢  Long Term Drift: < 0.02 °C /yr 
➢  Operating Range: -20 ~ 50 °C  
 
Built-in Humidity Sensor: 
➢  Resolution: 0.1 %RH 
➢  Accuracy Tolerance: Typ  RH 
➢  Long Term Drift: < 0.02 °C /yr 
➢  Operating Range: 0 ~ 99.0 RH(no Dew) 
 
 
 
1.4 Power Consumption 
LHT52 (without external sensor): Idle: 5uA, Transmit: max 110mA 
LHT52 + External Temperature Probe (AS-01): Idle: 6uA, Transmit: max 110mA.   
 
 
1.5 Storage & Operation Temperature 
-20°C to +50°C