The household gas alarm is developed by adopting advanced electronic techniques and gas detecting techniques. It is of high sensibility and is applicable to detecting the leakage of household gas, liquid gas and natural gas. The sensor reacts with the diffused gases in the air directly and generates linear voltage signal . When the detected gas density reaches a setting value, the alarm will send out acousto-optic alarm signal to remind users to take measures in time. Features: 1) Rated voltage: AC230V/50 ~ 60HZ 2) Power dissipation: