Loud 85 decible alarm Permanent carbon monoxide sensor. Powered by one 9 V battery ( size: 6F 22 or Alkaline 6LR61). The alarm sound pattern is pulsed the alarm beeps. This continues until the CO eliminated. The red LED will flash once every one second while in alarm mode. One Chirp every 40 seconds in an indication that the battery is Low ( need replacement) Test button to teat the units electronics and verifies proper unit operation Red LED light flashing once every 40 seconds to indicate normal operation mode. The Carbon Monoxide (CO) alarm monitors the air for the presence of CO. The alarm will sound and be accompanied by the flashing red LED light when there are high levels of CO. present. Caution: This alarm will only indicate the presence monoxide gas may be prestn in other areas, Carbon monoxide gas may present at other area.
SPECIFICAITON:
Power supply: 9 V Alkaline battery 6LR61 Sensitivity Setting: 150+/-50ppm CO concentration Standby Current: <35Ua Alarm Current:<20Ma Operation Ambient condition: 4~38 °C, 25~85% R.H.