One of our smoke alarms quit working, and it was just a little more for this twin-pack than it was for just one. After seeing just how easy putting in the battery was (no taking the smoke alarm off the ceiling--yippee!), we decided to replace another of our older alarms with the spare. On top of the ease of battery replacement, the screw-holes on these new First Alerts line up perfectly with the original smoke-alarm bracket, so putting them in was a five-minute job.
Easy to install. May have to drill holes or use alternative method to attach. Uses batteries so eventually will need replaced. Have one in kitchen, not good, goes off very easily with very minimal smoke from cooking. Had to disable it twice, will probably move it
Do you smoke alarms were absolutely perfect. They each have a 10 year warranty so the battery is guaranteed to last 10 years. I know that my home is protected for the next 10 years ever fire ever takes place in my house. Thank you Kmart!
they work great