Features 1、Smart Testing: High in sensitivity and wide in response range, the detector enables reliable testing on the gas leakage of pipeline. 2、Reliable Work: Can be applied to sensor humidity, temperature, acetone, acetylene, ammonia, benzene, butane, ethanol, gasoline, etc. 3、Clear Display: The gas tester allows with highly accurate digital display allows for a clear viewing on the result, very easy to use. 4、Dual Alarming: With dual alarm of colourful display and sound buzzer, the propane sensor will build you a safe working environment. 5、Easy Carrying: Designed to have a light weight and a compact size as well, the easy carrying will simplify indoor and outdoor using. Specification Item Type: Gas Detector Model: HT609 Material: ABS Battery: 3 x 1.5V AAA battery, delivered without battery. Application: For combustible gas detection. Sensor: Gas sensing semiconductor. Response Range: About 50PPM~1000PPM for methane. Sensitivity: ＞50ppm for methane. Detected Gas: Acetone, acetylene, ammonia, benzene, butane, ethanol, ethylene oxide, gasoline, hexane, hydrogen, methane, naphtha, natural gas, propane, solvents, etc. Warm Up Time: About 30 Seconds Response Time: <=500PPM: About 5 seconds. >500PPM: About 2 seconds. Package List 1 x Gas Detector 1 x User Manual 1 x Storage Bag