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Your cart is empty.The product is a hardwired alarm, also confirm if the wiring polarity is correct and that all wire nut connections are secure. A loose neutral (white wire) connection within the home junction box could prompt a device malfunction. Promote greater household safety with the First Alert 9120B Hardwired Smoke Alarm with Battery Backup. This 120-volt AC smoke detector uses an ionization smoke sensor to reliably detect smoke from hot, fast-flaming fires and alerts you with a loud 85-decibel alarm.
Tilley
2025-08-25 16:30:29
Easy to install
R. Pound
2025-06-24 13:53:57
Easily replaced and work perfectly.
M. T. Sarantakos
2025-06-02 17:17:59
excellent. Easy to install. Good value for money.
Peg Frenze
2025-05-29 11:05:46
It works well however I wanted a combination smoke alarm and carbon monoxide detector that I previously had but was sent just the smoke detector
archnmia
2025-04-05 15:52:00
Good product, fair price, great service.
Chuck D.
2025-03-20 15:32:08
This is not a direct replacement for the Sentry product and claiming so is false. The Sentry product also had a carbon monoxide detector built in and this product does not. I’m sending it back. The sentry product was more expensive and this company sent me 3 for the price of the Sentry.
dh
2025-01-26 14:31:48
Purchased these as replacements for original ones that were in a 2019 manufactured home I purchase for my daughter. Ended up being exact replacement for what was there so installation couldn't have been easier. Even used originally installed mounting brackets.
Rosellen
2025-01-23 18:45:33
Very pleased with the product. Already have all 3 up works great.
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