First Alert Hardwired Smoke Alarm with Battery Backup 4 PACK

Easily re-connected to my old wiring. Slightly larger than my old smoke detectors, so the installation covered over the discolored ceiling area of the old smoke detector.

I truly want to thank the Walmart delivery representative for ringing my doorbell and announcing the delivery. His actions are truly appreciated.

Replace all of old smoke detector Now is the time to do

First Alert has always been the best in smoke alarms

just took a couple minutes to put up all 4 to replace my old ones. No men required to install!! lol

I've had this model in my house since it was built 7 years ago, and they have been good, except for when they are not. Multiple times in the past year one unit got to the point where I was having to put a new 9V battery in every few months because it would randomly go off in the middle of the night. Had my wiring checked, and the only thing the electrician said could be the issue was one detector was bad. Since they are all interconnected, I changed them all (these things need to be replaced after several years anyway). If I had the paperwork from when we built, I would have been filing a warranty claim with the manufacturer for the one offender. Bright side, same model, same manufacturer, and they come with batteries, so the change over took less than 10 minutes.

i sent a request April 29 2014 to make one alarm stop beeping solid green lightand red blinking light work but one of them is beeping.

Having trouble returning this item.

Unusable and 3rd party sellers refused to accept my return

VERY disappointed in the product and 3rd party seller. These alarms are already over TWO years old. Smoke alarms are good for TEN years, whether installed or not. This means I paid top dollar and lost 2 years of usage. Then the 1st two we installed, the batteries already needed replaced. They will be returned!