Features:1. Gas Detector: This product is a combustible gas leak detector, which is used to quickly and reliably detect combustible gas leakage on gas pipelines.2. Automatic Shutdown: When there is no key operation and no measurement signal, the detector will automatically shutdown in about 5 minutes.3. Portable: The portable size and easy to hold also make it more convenient for you to operate, carry and store it.4. Detection Gases (Partial List): Acetone, acetylene, alcohol, ammonia, benzene, butane, ethanol, ethylene oxide, gasoline, hexane, hydrogen, methane, naphtha, natural gas, paint thinner, propane, solvent, etc.5. Professional Tools: It is widely used and is an indispensable tool for every professional. Specification:Material: ABSSize: about 16.6x2.7x2.4cm/6.53x1.06x0.94inchTechnical indicators:Sensor: Gas-sensing semiconductorDetection range: 50~1000PPM (methane)Response Sensitivity: 500PPM: about 2 secondsAlarm mode: analog display and buzzerOperating environment: 0~50C / 20~80%RHStorage Environment: -10~60C / 20~80% RHPower supply: 2x1.5V AAA alkaline batteries (not included)Note:It must be turned on in a clean air environment and wait for the warm-up to complete.Always test the function of the gas detector before using it to ensure that the detector is functioning properly.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-2cm measuring deviation due to manual measurement.Included1 x Gas Detector1 x Instruction Manual