The product technical parameters voltage selector: AC 220V; DC 9V-16V 12VDC machine static power: <0.5W; alarm <1.5W Alarm concentration: LPG: 0.1% -0.5% natural gas: 0.1% -1% of city gas : (H2) 0.1% -0.5% gas recovery response time: ≤30S working environment: Humidity ≤97% Working environment: Temperature 0 ℃ -60 ℃ Executive Standard: CJ3057-1996 home combustible gas is a gas for household use security products. When flammable gas accumulated to a certain concentration in the air, it will cause an explosion. Able to detect the concentration of combustible gas gas, install it in place of use of gas, when the gas concentration in the air exceeds a set value detector alarm will be triggered. It can effectively avoid the gas leak caused an explosion, fire, poisoning and other accidents, the majority of countries are already widely used in the world. One Connaught Shenzhen Security Technology Co., Ltd., R & D, production and sales of combustible gas, carbon monoxide alarms, smoke alarms, burglar alarm, industrial combustible gas detector in one series. With a number of international advanced level of production lines, the maximum annual capacity of up to 100 million units, the company has sophisticated testing equipment and excellent R & D engineers, perfect after-sale system, quality management system, many of the urban security, residential, factories, companies, schools, families, villas, warehouses, resources, petroleum, chemical, gas distribution and other areas to provide the highest quality products and services! One of the first brand promise of combustible gas, is willing to be your most reliable long-term partner!