Notes: There is only the detecting parameters for methane. For the detection of other combustible gases, the parameters are only for reference. Description: Features: *This 3 in 1 gas leak detector is designed to combine the functions of gas leak detector, humidity meter and temperature meter, great for daily use. Check appliances and piping in your house to pinpoint the precise source of a potential gas leak with the practical mini gas detector. *With the sound & bargraph and three-color light alarm ways, you can get timely feedback on the results. *High, Mid and Low sensitivity are switchable for different scenarios. Set high sensitivity to find small gas leaks. Set low sensitivity to find larger explosive gas leaks. High precision gas sensor for accurate and reliable gas leak detection, fast response time less than 5 seconds. Automatically calibrated in 30 seconds after startup, no need to calibrate it manually. *Portable, compact and lightweight, easy to carry and operate. Has an easy-to-understand interface, without complicated instructions, extremely simple to use. Quickly and accurately pinpoint potential flammable gases leaked in your RV, trailer, camper, kitchen, basement, gas stove, water heater and other household devices at home. *Take this handheld gas leak detector in the area where you think there might be a leak and wait for the device to display the current gas levels. This combustible propane detector widely applied with combustible gases, for the detection of flammable gases leaks, such as gas pipelines, propane tank stations, cabin leaks, exhaust gas and fuel leaks. Specifications: *Model: HT609 *Display: LCD *Color: Black & Red *Shell Material: ABS *Sensor: Gas-sensitive semi-conductor *Response Range: 50PPM~1000PPM (Methane) *Sensitivity: > 50PPM (Methane) *Warm-up Time: Approx. 30 seconds *Response Time: ≤500PPM: Approx. 5sec >500PPM: Approx. 2sec *Alarm Mode: Buzzer and indicator light *Ambient Temperature Testing: Range: -20.0°C ~ 60.0°C ( -4.0°F ~ 140.0°F ) Precision: 0.0°C ~ 45.0°C ( 32°F ~ 113°F ) ±1.0°C / 2.0°F Other: ±1.5°C / 3.0°F Resolution: 0.1 / 1 *Ambient Humidity Test: Range: 0.0% ~ 99.9%RH Precision: 20% ~ 80%, ±5.0RH Other: ±6.0RH *Temperature Units: °C / °F *Operating Conditions: 0 ~ 50°C / 20 ~ 80%RH *Storage Conditions: -10 ~ 60°C / 20 ~ 80%RH *Batteries: 3 x 1.5V AAA Alkaline battery ( not included ) Packaging includes： 1*Gas Leak Detector