Features
1.Stainless steel shell
2.Indicating propane,Natrual gas, methane and butane
3.Simple to operate
4.Audible and visual alerts
5.2AA batteries included

Specifications
Gas indicated Natural gas(methane),LPG(propane,butane)etc.combustible gas
Sensitivity Min Max
  Propane 500ppm 6500ppm
  Natural gas 100ppm 6500ppm
Working conditions Temp:-4~131F(-20~55C)
  Hum:<95%RH
Working current 200mA
Power Source DC3V(two 1.5V AA battery
Response time <5s
Alarm method Visual and andible alarm
Sound >65dB