Independent Carbon Monoxide Detector (ALF-CO21)

1. Loud 85 decible alarm.
2. Permanent carbon monoxide sensor.
3. Powered by DC9V batteries.
4. Alarm sound pattern: Continuous short alarm beeps and red LED will flash.
5. One 'beep' every 30 seconds is an indication that the battery is low(need replacement)(green LED willl flash at the same time).
6. Test button to test the unit electronics and verifies proper unit operation.
7. Green and red LED lighting indicates normal operation and alarm status.
8. The unit would sound 'beep' and red LED would flash once power on.
9. In 90 seconds after installing new batteries, the unit would begin to detect CO.

Parameter:

1. Power Supply: DC9V batteries
2. Sensitivity & Time: 30ppm, inactivation to alarms within 120minutes
50ppm, alarms within 60~90 minutes
100ppm, alarms within 10~40 minutes
300ppm, alarms within 3 minutes
3. Standby Current: 4. Alarm Current: 5. Operation Ambient Condition: 5~40 centigrade 20~90%R. H