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LHT52 Temperature & Humidity sensor      7  /  40 
2.  Operation Mode 
2.1 How to activate LHT52?   
1.  Open enclosure from below position.   
 
2.  Insert 2 x AAA LR03 batteries.   
 
 
3.  Press the reset button to activate device.   
   
 
User can check LED Status to know the working state of LHT52.