Specifications:

Working voltage: AC110/220V Power consumption: static≤10mA  alarm≤15mA Alarm range: natural gas 3%~15%LEL Response time: <30s Alarm sound:>75Db ( right ahead 1m) Installation style: wall mounted Working temperature:-10°C~55°C Working humidity: 10%-95% Alarm concentration: 2500PPM Wireless frequency: 433MHz Wireless emission distance: >100m(open area)