BX166 series gas detector is specially used for detecting combustible gas leakage. With high-sensitivity and reliable catalytic gas sensor, it is suitable to home, industrial and other environment with methane and propane combustible gas. Applications: BX166 series gas detector is specially used for detecting combustible gas leakage. With high-sensitivity and reliable catalytic gas sensor, it is suitable to home, industrial and other environment with methane and propane combustible gas. Features: Auto zero calibration Fast response and resume Easy to operate Variety sound for different status Target Gas: Natural gas (CH4), LPG (propane, butane), combustible gas etc Range: 0~100%LEL Sampling Method: Natural diffusion Working Temperature: -20~55℃ Working Humidity: <95%RH Working Voltage: DC3V (two 1.5V AA battery) Working Current: 139mA Low Alarm: (20±5) %LEL High Alarm: (50±10) %LEL Response Time: <5s Alarm Method: Visual and Audible Sound Level: ≥65dB Package and Accessories: 50 pcs per carton, size: 46*31*25cm