Practical Functions High and low sensitivity are switchable for different scenarios. Sensor with high sensitivity as low as 50ppm detect even small leaks, detection range of 50 to 10,000ppm. Easy to operate, so you can check gas leaks with confidence and prevent dangerous accidents or damages. LCD Display Clear Visibility LCD display with green backlight ensures clear visibility even in the dim light. One button detecting, all you need it just to turn it on, and pin point the suspicious leakage source and nail it! No complicated calibrations, or fancy functions! Handheld and Easy to Use Handy meter: Weighing only 1.69 ounces, measuring 7 by 1.2 by 1.2 inches, compact and lightweight, easy to carry around.This handheld detector use batteries to operate, but theyre not permanently installed in your home. Instead, youll hold this detector in the area where you think there might be a leak and wait for the device to display the current gas levels. Find Gas Leak Detect the presence of all kinds of combustible gas and react very quickly. Find the location of any natural gas, propane, LP or fuel leaks by running sensor probe along a gas pipe, fuel line, or fittings near any gas smells. Pinpoint fuel leaks from your lawnmower or car. Visible And Audible Alarm Send out an visual and audible alarm if any gas is detected. 6 level symbol indicate strength of the leaks. Which can help you find a gas leak anytime with this propane & natural gas detector.