Dimensions 69x120mm Note: Since this is a manual measurement, please allow for some errors in the data. Thanks for your understanding. Stay Safe - Gas detectors are mainly used to detect natural gas (main components: methane), liquefied petroleum gas (main components: propane, butane) and city gas (alkanes, olefins, arena). When the combustible gas leakage exceeds the standard, the gas detector will issue a slow, accelerated or pressed, 85dB continuous sound alarm. It cannot detect toxic gases such as carbon monoxide. LED digital display and audible warning - Gas detector indicator shows 0 under normal conditions. If a flammable gas leak is detected, the numbers 1-9 and A may appear on the screen. Once the concentration exceeds 3% of the LEL, the alarm will sound and flash red. According to the concentration of combustible gas, the alarm will be in different alarm states. DURABLE AND ENERGY SAVING - Standard European plug and play plug design, no need for converters, very simple and convenient installation. The detector is anti-mildew, anti-insect and anti-corrosion. Flame retardant ABS plastic, easy to clean. Significant energy savings using less than 2 watts of power. Widely used in restaurants, kitchens, hospitals, hotels, oil plants, garages, gas stations, etc. TEST METHOD - Press and hold the ignition switch located at the methane detector air inlet, then slowly deflate (do not turn on while deflating). When the concentration reaches the standard, the alarm will sound until the gas volume in the environment falls below the alarm point. Note: The warm-up time for the system is approximately 2-3 minutes. During this time, the gas test will not work.