The red light flashes on First Alert® carbon monoxide alarms to indicate that the carbon monoxide alarm is getting battery power. If you don't see the red light blinking, replace the alarm's batteries immediately.. When a smoke detector blinks red between once every 30 seconds to once a minute, that means it is sensing possible smoke in the air, and its working as it should. If a detector has a blinking red or green light every second or so, with or without an audible alarm, that usually means two things:. If either a smoke detector or carbon monoxide.

First Alert Hardwired Smoke and Carbon Monoxide Detector with Battery
First Alert Hardwired Smoke and Carbon Monoxide Detector with Battery
First Alert Battery Powered Carbon Monoxide Alarm with Digital Display
First Alert Battery Powered Carbon Monoxide Alarm with Digital Display
First Alert CO410 Battery Operated Carbon Monoxide Alarm with Backlit
First Alert CO410 Battery Operated Carbon Monoxide Alarm with Backlit
First Alert Carbon Monoxide Alarm Red Light Blinking Shelly Lighting
First Alert Carbon Monoxide Alarm Red Light Blinking Shelly Lighting
Smoke Alarm Flashing Red Home Inspection Geeks
Smoke Alarm Flashing Red Home Inspection Geeks
First Alert Smoke Detector Red Flashing Light How to easily
First Alert Smoke Detector Red Flashing Light How to easily
First Alert Carbon Monoxide Detector Blinking Red Light Shelly Lighting
First Alert Carbon Monoxide Detector Blinking Red Light Shelly Lighting
First Alert Fire And Carbon Monoxide Alarm Blinking Red Light
First Alert Fire And Carbon Monoxide Alarm Blinking Red Light
BRK First Alert SC9120B Hardwired Smoke & Carbon Monoxide Alarm
BRK First Alert SC9120B Hardwired Smoke & Carbon Monoxide Alarm
First Alert Carbon Monoxide Alarm Constant Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Constant Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Constant Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Constant Red Light Shelly Lighting
First Alert Battery Operated Smoke and Carbon Monoxide Alarm with
First Alert Battery Operated Smoke and Carbon Monoxide Alarm with
First Alert Smoke and Carbon Monoxide Alarm
First Alert Smoke and Carbon Monoxide Alarm
First Alert Carbon Monoxide Detector Blinking Red Light Shelly Lighting
First Alert Carbon Monoxide Detector Blinking Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Red Light Blinking Shelly Lighting
First Alert Carbon Monoxide Alarm Red Light Blinking Shelly Lighting
First Alert Hardwired Interconnected Carbon Monoxide Alarm with Battery
First Alert Hardwired Interconnected Carbon Monoxide Alarm with Battery
First Alert SC9120B Hardwired Combination Carbon Monoxide and Smoke
First Alert SC9120B Hardwired Combination Carbon Monoxide and Smoke
First Alert Carbon Monoxide Alarm Blinking Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Blinking Red Light Shelly Lighting
First Alert Fire And Carbon Monoxide Alarm Blinking Red Light
First Alert Fire And Carbon Monoxide Alarm Blinking Red Light
First Alert Carbon Monoxide Alarm Beeping Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Beeping Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Blinking Red Light Shelly Lighting
First Alert Carbon Monoxide Alarm Blinking Red Light Shelly Lighting
Shop First Alert BatteryOperated Carbon Monoxide Smoke Detector (Works
Shop First Alert BatteryOperated Carbon Monoxide Smoke Detector (Works
First Alert Carbon Monoxide Alarm Red Light Not Flashing Shelly
First Alert Carbon Monoxide Alarm Red Light Not Flashing Shelly
First Alert Carbon Monoxide Detector Steady Red Light Shelly Lighting
First Alert Carbon Monoxide Detector Steady Red Light Shelly Lighting
First Alert Carbon Monoxide Detector Steady Red Light Shelly Lighting
First Alert Carbon Monoxide Detector Steady Red Light Shelly Lighting
First Alert Smoke Detector Red Flashing Light How to easily
First Alert Smoke Detector Red Flashing Light How to easily
First Alert 2Pack BatteryOperated Combination Smoke and Carbon
First Alert 2Pack BatteryOperated Combination Smoke and Carbon
First Alert SC9120B Smoke and Carbon Monoxide Alarm with Battery
First Alert SC9120B Smoke and Carbon Monoxide Alarm with Battery
7 Images First Alert Carbon Monoxide Detector Steady Red Light
7 Images First Alert Carbon Monoxide Detector Steady Red Light
First Alert Carbon Monoxide Detector Steady Red Light Shelly Lighting
First Alert Carbon Monoxide Detector Steady Red Light Shelly Lighting

4. False alarm. If the red light is blinking intermittently, it could mean that the detector has been triggered by something other than smoke or fire. This could be due to steam from a shower, cooking smoke, or even a bug or spider crawling inside the device. DIY Fixes for First Alert Smoke Detector's Blinking Red Light. Frequently asked questions to help with your First Alert smoke alarm, carbon monoxide alarms, fire extinguisher, safes and more.. On First Alert® carbon monoxide alarms, the red light flashes to show the Carbon Monoxide Alarm is properly receiving battery power. If you do not see the red light flashing, change the batteries in the alarm.