Why does my smoke alarm keep going off early in the morning?
Power interruptions are common in areas where utility companies switch grids in the early hours of the morning. In AC or AC/DC smoke alarms, a loose hot wire connection can intermittently disconnect power to the smoke alarm. The effect is the same as a power failure. When power is restored, the units may alarm briefly.
How long do First Alert smoke and carbon monoxide detectors last?
between 5 and 7 years
First Alert also offers alarms with 10-year sealed batteries that will last the life of the alarm. What Does an End-of-Life Beep Mean? Most carbon monoxide alarms last between 5 and 7 years. Even if the battery is still good, all alarms should be replaced after 7 years.
How long does first alert last?
A First Alert carbon monoxide alarm life span is warranted for 5 years. After 5 years any alarm should be replaced with a new CO Alarm. Alarms may have an actual life span that is shorter due to environmental conditions and may need to be replaced sooner.
Does First Alert model SA303 detect carbon monoxide?
The First Alert SA303 is part of the Smoke & Carbon Monoxide Detectors test program at Consumer Reports.
Why does my smoke alarm keep going off every 10 minutes?
It is normal for smoke alarms to go off and sound briefly (up to 5-10 seconds) when you install a new battery or when they are powered up. If the alarm continues to go off and no smoke is present, the cause may be one of the following: There may be insufficient battery power, try new batteries.
Why did my smoke detector go off in the middle of the night?
As a smoke alarm’s battery nears the end of its life, the amount of power it produces causes an internal resistance. Most homes are the coolest between 2 a.m. and 6 a.m. That’s why the alarm may sound a low-battery chirp in the middle of the night, and then stop when the home warms up a few degrees.
Where is the expiry date on a smoke alarm?
back
Look at the back of the smoke alarm for the date of manufacture. The expiry date is usually 10 years from that date.
Why did my fire alarm go off in middle of night?
How do you open a First Alert smoke alarm sa303?
1. Insert a flathead screwdriver between the mounting bracket pin and the mounting bracket. 2. Pry the Smoke Alarm away from the bracket by turning both the screwdriver and the Smoke Alarm counterclockwise (left) at the same time.
What does the date mean on the back of a smoke detector?
Answer. The date printed on the back of your alarm is not an expiration date. It is the day your unit was manufactured. Learn more in our guide, Find an Alarm’s Model # or Date of Manufacture . Is your old smoke or CO alarm still good?