Product Description: 
 Detection of gas: natural gas, liquefied petroleum gas, city gas (H2) 
 Size: 125mm * 30mm 
 Unique: 
 (1) Add automatic sensor drift compensation, the real against the false positives and false negative. 
 (2) The failure prompted the alarm function for user to replace and repair, to prevent the report. 
 (3) MCU overall control, the working temperature of -10 degrees to 60 degrees. 
 Operating voltage: 220VAC or 110VAC, 12VDC-20VDC 
 Additional features: linkage exhaust fan, joint manipulator, solenoid valve 
 Networking: Wired networking: (NO, NC) 
 Wireless networking: 315MHZ/433MHZ; (2262 OR 1527)