Features: Compact Size: Portable gases detector, compact ABS body, waterproof and dustproof, quick response, detect leaks quickly. Semiconductor Sensors: Using quality gases-sensitive semiconductor sensors, high-precise and react very quickly, support more accurate measurement. Easy to Use: Convenient for users to safely detect and test a variety of combustible gases types, easyto meet different test needs. Measurable Gases Types (partial list): acetone, Acetylene, alcohols, ammonia, benzene, butane, ethanol, oxirane, gasoline, hexane, hydrogen, methane, naphtha, natural gases, paint thinners, propane, solvents. 3-Color LCD Display: Clear definition three-color LCD display with backlight, it can automatically matching the appropriate color backlight according to the measured concentration. Multifunction Design: With temperature and humidity measurement function, 10 minutes no operate automatic shutdown function, and temperature units switch function. Sound&Lights Alarm: Sound and lights dual prompts, when detecting combustible gases sink leakage, the meter beeps and the concentration simulation bar increases. Sensitivity Adjustable: Three levels of sensitivity are switchable, you can adjust to high/middle/low level for different scenarios. High Safety: Push-lock battery cover design, easy to replace the battery, battery built-in and lock screws design makes the use more secure. Wide Applications: Suitable for water heating device detection, gases pipeline detection, etc. Specifications: Name: Combustible Gases Detector Material: plastics Battery: 3 * 1.5V AAA Alkaline Battery (not included) Display: 3-color LCD disply with concentration bar indicator Test ranges: 50-1000ppm, 30% Detecting gases: combustible gases Alarm mode: sound+lights Auto power off: Yes Low battery indication: Yes Test Gases (partial list): acetone, Acetylene, alcohols, ammonia, benzene, butane, ethanol, oxirane, gasoline, hexane, hydrogen, methane, naphtha, natural gases, paint thinners, propane, solvents, etc.. Temperature measurement ranges: -20 to 60 / -4 to 140 Humidity measurement ranges: 0.0%-99.9%RH Item size: 143 * 59 * 27mm / 5.63 * 2.32 * 1.06in Item weight: 148g / 5.22ounce Package size: 188 * 92 * 56mm / 7.40 * 3.62 * 2.20in Package weight: 213g / 7.51ounce Packing List: 1 * Combustible Gases Detector 1 * Cloth Bag 1 * Guideline