This product is a high stability detector (hereinafter referred to as the detector), used to detect the leakage of combustible gas, prevent the hazards caused by gas leakage, the detector uses a highstability catalytic combustion sensor, it has the characteristics of highstability and small sensitivity drift. This product uses a digital tube to display the alarm concentration, the working voltage range of the detector is AC110~250V, this product is used in places where flammable gas leakage may occur. Features: 3 In 1 Plug In Natural Gas Detector: Our gas leak detector equipped with 3 major air indicators of combustible gas, temperature, and humidity to protect your family. Accuracy & Durability: This natural gas detector use imported catalytic combustion sensor, more responsive, when the gas concentration reaches the alarm level( more than 5%LEL), the voice and light alarm will work. Easy to Use: This is a new PlugandPlay natural gas detector, which saves a lot of installation time. Big color LCD display, The highdefinition screen makes it easy to read even at night. Widely Used: When the concentration of combustible gas leaks to a preset level, the gas detector alarm will sound an 80dB alarm as well as display the concentration level of the gas. Detector de gas suitable for natural gas, propane, methane, butane, LNG, LPG, etc. Specifications: Model: KH107 Material: ABS Working Voltage: AC100~250V Temperature Range: 10 celsius ~+50 celsius (0 Fahrenheit 122 Fahrenheit ) Humidity Range: 10%~95%(RH) Detection Concentration Range: 0~10%LEL Alarm Concentration: 5%LEL Alarm Reset: Automatically reset when combustible gas is cleared Sensor: Good linearity, stable work and long life LCD Display: Display gas concentration Indicator Information: AC Power: green LED                                     Gas Alarm: Red LED is always on                                     Sensor Failure: Yellow LED is always on Sensor Life: 2 years Alarm Mode: Sound and light alarm Replaceable Components: No Item Size: 118 * 51 * 50mm 4.64 * 2.01 * 1.97in Item Weight: 79g 2.78oz Package Weight: 97g 3.42oz Package Size: 12 * 5.3 * 5.7cm 4.72 * 2.08 * 2.24in Package List: 1 * Natural Gas Detector 1 * User Manual (English)