Built-in new model sensor, we can detect gas leaks more precisely and faster (range: 50 to 1000ppm). This new sensor reduces the warm-up time to 28 seconds before testing for gas leaks such as: Propane, Methane, Natural Gas, Coal Gas, Gasoline, Hexane, Butane, Ethylene Phenoxide, Ethylene Propane, LNG and more.   Including a lanyard with loop, you can take it with you when you need to detect flammable gas appliances.   With this high and low mode, we can accurately and quickly find the gas leak point. Turn on the detector in a clear environment, complete the warm-up process within 28 seconds, then click the "Hi" button to find the leak range, and then click the "Lo" button to find the gas leak point, the perfect safety tool for you.   When gas leak is detected, the progress bar will turn red display on the 1.1inch HD screen, and the alarm will continue to "di di di". When the battery is low, a low battery icon will appear on the screen.   Our gas leak detector will automatically shut off within 5 minutes. 2 AAA batteries with 100+ working hours.   Colour:A:Orange/B:Black/C:White   Material:ABS      Package Contents:   1set * gas alarm detector for home