Product description:

Gas detected: Natural Gas/LPG/Coal Gas

Sensor:Japanese electrochemistry sensor                                     
Agent query function                   
Alarm peak query function 

Smart voice alarm and digital display
Alarm point settings
Concentration unit conversion   

Concentration alarm: 1-25%LEL    (500-12500PPM)
Alarm set: 0.5-9.9KPPM or 1.0-19.8%LEL
Input power: 3.7V 2600MAH lithium battery
Static current: ≤200mA   
Alarm current: ≤500mA
Response time:  ＜30 seconds
Alarm sound: ＞80 decibel (From 1m)