[Portable Leak Detector]This portable leak detector can detect a number of gases, like methane, natural , propane, butane, ethane, coal , oil, gasoline, toluene, sewer , alcohol, ketones, carbon monoxide and more. As the concentration goes up, the audible alarm beep more frequently and the scale add up. Can detect combustible between 50 and 10000 ppm. [High & Low Sensitivity Adjustable]High precision sensor for accurate and leak detection, fast response time less than 5 seconds. High and low sensitivity are switchable for different scenarios. Set high sensitivity to find small leaks. Set low sensitivity to find larger leaks. This handheld leak detector allow users with the to quickly and detect combustible leaks in most hard-to-reach around appliances. [Visual & Audible Alarm]This analyzer pen will send out a visual and audible alarm if any combustible is detected. Alarms continuously with 85dB tone and LCD light turns red when detecting leak. LCD display with green backlight ensures clear visibility even in light. It has a low-battery indicator (batteries not included). Power-save modes, auto power off after about 10 minutes if there are no operation and measurement signal. [Wide Application ]Take this handheld detector in the area where you there might be a leak and wait for the device to display the current levels. The combustible propane detector widely applied with combustible gases, mists and residues, for the detection of gases leaks, such as pipelines, propane tank stations, cabin leaks, exhaust and fuel leaks. Leak Detector & Easy To Use, Portable pen type design, and lightweight, easy to carry and operate. Material: ABS Color as shown model:HT61 Package Contents: 1X Leak Detector Pen (2X1.5 AAA Batteries not included) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.