Product description:

Gas detected: Natural Gas/LPG/Coal Gas 
Sensor:Japanese electrochemistry sensor                                     
Agent query function

Alarm record query function  
Smart voice alarm and digital display
Alarm point settings
Concentration unit conversion       
Measure range:    0-50KPPM   (0-100%LE   )
Display range:      0.8-30.0KPPM   (1.6-60%LEL)
Concentration alarm:   5.0KPPM     (10%LEL   )
Alarm point set :       19.9KPPM    ( 2-19.8%LEL)
Working environment: 0-60℃        ≤95%Rh 
Input power :  AC110V~AC240V
Gas sensor: service life for 5 years