Features:Used to detect various flammable gas↔? such as methane↔? ethane↔? propane↔? butane↔? alcohol↔? etc.Adjustable sensitivity↔? easy operation.Quickly identify and determine the flammable gas leakage location.With a headphone jack for using in noisy environment.Sound and light alarm against flammable gas leakage.Low battery indication.Suitable for use in industry and household↔? such as factories and kitchens↔? etc.Specifications:Sensitivity: 50ppm MethaneEnsor type: Low power semiconductorWarm-up time: 60 secondsResponse time: 2 secondsOperation cycle: Continual operationSensor size: 16 inAlarm limit: Lel 10% of MethanePower supply: 3 * LR14 1.5V battery (not included)Detector size: 24 * 11.5 * 5cm / 9.4 * 4.5 * 2inDetector weight: 300g / 10.5ozPackage size: 26.5 * 12 * 7cm / 10.4 * 4.7 * 2.7inPackage weight: 447.5g / 15.78ozPacking list:1 * Combustible Gas Detector1 * Storage Bag1 * User Manual (English)"