【What You'll Get 】: Gas Leak Detector X1, AAA Batteries X2, User Manual X1 【Pen Type Design】The product is 6.3 inches long and 0.78 inches wide, weight is 2.04 ounces and comes with a pen hook that allows it to fit in a shirt pocket.If not in use for a long time, remove the battery. In some fixed scenarios, strict gas detection products can save you from worry. 【Combustible Gas Leak Detector】The product is suitable for detecting liquefied petroleum gas, methane, ethane, propane, butane, natural gas, coal gas, gas fuel, liquefied natural gas, etc., accurately locating gas leakage, reducing the risk of gas explosion, and ensuring the safety of family and property. 【LED & Audio Gas Alarm】The gas detector is equipped with a visual alarm and an audible alarm. When the machine detects a gas, the bar graph on the display will increase as the concentration increases, and the display will turn red when the gas concentration is too high. At the same time, the alarm beeps and the frequency of the beep increases as the concentration increases. 【LED & Audio Gas Alarm】Press the orange button on and warm-up for a 20-second preheating periodg. Point it towards suspicious areas, and it quickly detects leaks in just 3 seconds. The gas detector is equipped with a visual alarm and an audible alarm. When the machine detects a gas, the bar graph on the display will increase as the concentration increases, and the display will turn red when the gas concentration is too high. At the same time, the alarm beeps and the frequency of the beep increases as the concentration increases. 【Other key information】Typical catalytic sensor>1 year, response time: determined by gas type.Low alarm:2000ppm, High alarm: 4000ppm. Drift: Zero drift less than 2% FS per half year, sensitivity drift less than 3%FS per half year. Natural Gas Leak Detector, Portable Gas Sniffer with Audible & Visual Alarm, for Combustible Gas Like Methane, Propane -Blcak