Alarm index : sensitivity 1 grade ◆Static current: 5uA ◆Alarm current: 12mA ◆Indication state: The indicator lamp twinkles once every 45 seconds ◆Alarm sonority: 95db (report to the police in succession) ◆Ambient temperature: -10°C～45°C ◆Relative humidity: ＜95% ◆Transmission distance: 200-300m