This device is very sensitive, can respond quickly, accurate measurement of low level gas concentration. Suitable for home, office buildings, factories, school, hotel, warehouses, entertainment venues, etc.< /> < /> Features:< />Clear LCD display, tracking all information at a glance.< />Intelligent detects all kinds of gas leaks (such as petroleum gas, natural gas, methane), reduces accidents.< /> When a gas leak is detected, the level ring is displayed and 'There is a gas leak . Check now" is heard. When the gas leakage level continuously increases and the preset level is reached, the detector alarm sounds, the red alarm indicator flashes.< /> When the temperature around the detector increases up to preset value, red alarm indicator flashes, value ring displays, 'Heat alarm, check now' is heard and a same text notification is sent to your mobile.< /> The detector can be connected to external equipment such as solenoid valves and exhaust fans. After an alarm occurs, the equipment is automatically monitored to reduce potential safety hazards.< /> Easy to install and the indicator light makes it easy to read.< /> < /> Features:< /> Color: Black + White< /> Material: Plastic< /> Consumption: ＜200mA< /> Working Temperature: -10 to 55℃< /> Range: 0-100％LEL< /> Alarm Setting Value: 6％LEL< /> Tolerance: ±3％LEL< /> Response Time: ≤30s< /> Heat Alarm Value: 57℃< /> Alarm Volume: ≥70dB< /> Item Size: 86 * 86 * 25mm / 3.4 * 3.4 * 1.0in< /> Item weight: 50g / 1.8ounce< /> Package size: 95 * 95 * 55mm / 3.7 * 3.7 * 2.2in< /> Package weight: 155g / 5.5 ounces< /> < /> Packing List:< /> 1 * Gas Sensor< /> 1 * USB Cable< /> 1 * User Manual 39;user