Feature: 1. Wide Application: This gas detector is widely used in gas pipeline detection, domestic gas prevention, metallurgical field, tunnel mining operations, oil and gas extraction field, etc. 2. Detect Various Gases: The gas leak detector is suitable for locating various combustible gases such as methane, natural gas, propane, ethane, butane, fuel oil, alcohol, kerosene, gas, gasoline, etc., and locating leak points quickly and accurately. 3. Easy To Use: The gas detector needs to warm up for 30 seconds after it is turned on, and it will detect automatically after the warm up is completed. If the relevant gas is not detected within five minutes, the instrument will automatically shut down. 4. Sound And light alarm function: This gas detector has a visual LED light and buzzer alarm. The higher the concentration of the relevant gas, the higher the buzzer frequency and the more LED lights, which makes it easy to quickly locate the leak location. 5. ABS Housing: The gas detector housing is made of excellent ABS engineering plastic material, composite antislip, with impact resistance. Specification: Item Type: Gas Detector Model: HT66 Material: ABS Battery: 1.5V AAA Battery x 2 ( Shipped Without Battery ) Use: Gas Concentration Detection Basic Parameters: Sensor: Gas Sensitive Semiconductor Detection Range: Approx. 50~1000PPM (methane) Response sensitivity: Approx. <50ppm (methane) Warm Up Time: Approx. 30 Seconds Response Time:<=500PPM: Approx. 5 Seconds, >500PPM: Approx. 2 Seconds Alarm Method: Indicator And Beep Operating Environment: Approx. 0~50°C / 32-122℉, 20~80% RH Storage Environment: Approx. -10~60°C / 14-140℉, 20~80% RH Detecting Gas: Acetone, Acetylene, Alcohol, Ammonia, Benzene, Butane, Ethanol, Ethylene oxide, Gasoline, Hexane, Hydrogen, Methane, Naphtha, Natural gas, Propane, Solvent, etc.. Package List: 1 x Gas Detector1 x Manual