Detailed information: With gas concentration display, you can understand the situation at any time! Convenient and intuitive! Make your home safety more worry-free!Detection gas: liquefied petroleum gas, natural gas, artificial gasPower supply voltage: AC100V~AC240VPower supply frequency: 50/60HzRated power: <2WDetection gas: natural gas, LPG, coal gasAlarm concentration: 3%LEL~20%LELAlarm loudness: 85dB (3 meters away from the product)Working temperature: -10~40Working temperature: <97%RHIt is an independent combustible gas alarm, which adopts internationally advanced gas-sensitive sensing technology and uses a cost-effective microprocessor as the control core. It is a small gas safety prevention product suitable for home use. It is used to continuously detect indoor gas leakage concentration. When the leakage concentration reaches the set value, the detector will emit an audible and visual alarm. When the indoor gas concentration is lower than the alarm setting value, the detector automatically returns to normal working state, which can avoid the occurrence of poisoning, explosion, fire and other personal injury and property loss accidents caused by combustible gas leakage.Features:1. Adopt high-quality semiconductor heating sensor with good stability.2. MCU intelligent control monitoring, SMT patch process3. With on-site sound and light alarm function.4. Digital tube display technology, showing the instant leakage concentration.5. Three indications: power indication-POWER, state indication-STATE, alarm indication-ALARM.Detection gas: liquefied petroleum gas, natural gas, artificial gasWorking voltage: AC100V~AC240V 50/60HzRated power: <4WAlarm concentration: liquefied petroleum gas: 0.1~ 0.5% natural gas: 0.1~ 0.3% coal gas 0.1~ 0.5%Alarm volume: 85dB (3 meters away from the product)Use environment: -1050, relative humidity <97%RHStorage temperature: -2555Packaging content: 1*European standard