Keep Safe – The gas detector is designed to detect natural gas (main components: methane), LPG (main components: propane, butane), and urban coal gas (alkane, olefin, arenas). When a combustible gas leak exceeds the safety threshold, the detector emits an 85dB audible alarm with varying patterns based on gas concentration. This device does not detect toxic gases such as carbon monoxide. LED Digital Display & Audible Warning – Under normal conditions, the display shows 0. When a flammable gas leak is detected, the screen displays values from 1 to 9 and A. The alarm activates with a red flashing light and audible alert when gas concentration exceeds 3% of the LEL. Alarm behavior varies according to the level of combustible gas detected. Durability and Energy Saving – Features a European standard plug for easy plug-and-play installation without the need for a converter. The detector is mold-resistant, pest-resistant, and corrosion-resistant. Constructed with flame-retardant ABS plastic for durability and easy cleaning. Power consumption is less than 2 watts, ensuring energy efficiency. Suitable for use in restaurants, kitchens, hospitals, hotels, oil factories, garages, and gas stations. Test Method – To test, press and hold the lighter switch at the gas inlet of the methane detector and slowly release gas (do not ignite during testing). When the gas concentration reaches the detection threshold, the alarm will sound continuously until the gas level drops below the alarm point. Note: Allow a warm-up time of approximately 2–3 minutes; testing during this period will not trigger the alarm.