Portable Gas Leak Detector: This natural-gas leak detector is easy to carry, and accurately locates leaks of natural gas, methane, propane, butane, ethane, LPG and sewer gas; its response is fast—0.5–2 seconds at quickest Flexible Gooseneck Probe: The gas leak detector is equipped with an illuminated flexible probe, allowing easy detection of hard-to-reach or poorly lit areas such as natural gas pipelines, sewer systems, basements, cabins, RVs, and behind gas appliances Visual & Audible Alarm System: When the gas leak detector detects a gas leak, it will emit an 85dB alarm and display the gas leak concentration on a screen bar. Changes in gas concentration levels can help you accurately locate the leak area User-Friendly Design: The natural gas leak detector will automatically powers off after 20 minutes of inactivity to conserve battery.. In addition, you can turn off the alarm with the mute button. Equipped with branded batteries, the device has a long operating time Save Cost: With this gas leak detector you can track down the source of gas leak yourself—at home or in your RV—so you don’t have to pay a professional to do it You Will Get: 1 gas detector, 3 AA batteries, 1 storage bag, and 1 user manual. We have a professional engineering team ready to help you with any problems or concerns at any time