Model: HC-821

Name: CO & Smoke detector

Dimension: Φ140X41mm

Warning Density: Carbon monoxide 30ppm,within 120 minute does not alarm; 
                           50ppm,within 60-90 minutes alarm
                           100ppm,within 10-40 minutes alarm; 
                           300ppm,within 3 minutes alarm;
                           Smog: 1%~5%/FT OBS

Operating voltage: DC9V (6F22 battery) 

Alarm Current: ≤45mA 

Surveillance current: ≤25uA 

work temperature: -10°C～60°C

work humidity: ≤95%RH

Buzzer level: ≥85dB(3m)

Time of pre-heating: 1-2 mins

Battery: 9V battery