This product is a combustible gas leak detector, used for fast and reliable detection of combustible gas leakage on the gas pipeline. It is widely used and is an indispensable tool for every professional.Features:1. Gas Leak Detector: The gas leak detector with LCD display can detect the presence of many kinds of combustible gas and react very quickly. Compact and lightweight, easy to carry.2. Ambient Humidity and Temperature: In addition to detect the combustible gas, the use of high-precision temperature and humidity sensors, used to measure the current environment relative humidity and temperature.3. Audible and Visual Alarm: When the detector detects combustible gas, the number of analog strips will increase as the gas concentration increases; the buzz will increase as the gas concentration increases, and the backlight will change from green to orange and up to red as the signal increases.4. Auto Power Off: When no operation within 10 minutes, no detection signal, the instrument will automatically shut down.5. Sensitivity Selection: High / Mid / Low sensitivity are switchable for different scenarios.Note:1. Must be in a clean air environment power on, and wait for the completion of preheating.2. Due to different light conditions and different monitors, item color displayed in photos may be showing slightly different from real object.3. Due to manual measurement, the size may be slightly different. Thank you for your understanding.Specifications:Display: LCDColor: Black & RedShell Material: ABSSensor: Gas-sensitive semi-conductorResponse Range: 50PPM~1000PPM (Methane)Sensitivity: > 50PPM (Methane)Test Gas (part list): acetone, acetylene, alcohol, ammonia, benzene, butane, ethanol, oxirane, gasoline, hexane, hydrogen, methane, naphtha, natural gas, paint thinners, propane, solvents, etc.Warm-up Time: Approx. 30 secondsResponse Time:500PPM: Approx. 5sec>500PPM: Approx. 2secAlarm Mode: Buzzer and indicator lightSensitivity Selection: High / Mid / Low sensitivityAmbient Temperature Testing:Range: -20.0C ~ 60.0C ( -4.0F ~ 140.0F )Precision: 0.0C ~ 45.0C ( 32F ~ 113F ) 1.0C / 2.0FOther: 1.5C / 3.0FResolution: 0.1 / 1Ambient Humidity Test:Range: 0.0% ~ 99.9%RHPrecision: 20% ~ 80%, 5.0RHOther: 6.0RHTemperature Units: C / FOperating Conditions: 0 ~ 50C / 20 ~ 80%RHStorage Conditions: -10 ~ 60C / 20 ~ 80%RHBatteries: 3 x 1.5V AAA Alkaline battery ( not included )Item Size: 14.2*5.8*2.6cm / 5.59*2.28*1.02inNet Weight: 115g / 4.06ozPacking Size: 18.5*9*5.5cm / 7.28*3.54*2.17inPacking Weight: 193g / 6.81ozPackage List:1 * Gas Leak Detector1 * Cloth Bag1 * Manual ( English ) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.