Features: 1. Through sound and light alarms, it effectively reminds you to stay away from dangerous situations. 2. Our gas detector is highly sensitive, it could detect many kinds of gas, such as natural gas, gas, coal gas, methane, other combustible gases, etc. 3. A great household necessity to protect your families' safety. Perfect for using in home kitchen, bathroom, bus carriage, grill house and so on. 4. Featuring a 30cm / 11.8in probe connector, it can quickly find leakage and take precautions to ensure safety. 5. Smart detection of various types of gas. Most household gas can be detected, no need to worry about the applicability. Specification: Item Type: Gas Detector Material: Plastic Detection Gas: Fuel Gas Sensitivity: 50ppm Methane (adjustable) Alarm Mode: Sound and light alarm Sensor Type: Low power semiconductor Preheating Time: 60 seconds (25℃, 60% environment) Response Time: 2 seconds Operation Cycle: Continuous operation Battery Life: Continuous use of 8 hours (slightly different according to working state) Sensor Size: Approx. 30cm / 11.8in Alarm Limit: LEL 10% methane Operating Temperature: 0-50℃ Low Battery Indication: 3± 0.2v Battery: 3 x 1.5v AA battery (Not Included) Operating Current: About 150mA Size: Approx.68 x 46 x 130mm / 2.6 x 1.8 x 5.1in Package List: 1 x Gas Detector 1 x Instruction .