First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup

The First Alert SMI100-AC is compatible with earlier First Alert and BRK hardwired smoke alarm models that use the same wiring harness and mounting bracket. This includes many legacy models, allowing you to reuse the base and plug without rewiring. I used this to replace a First Alert SA9120 which had reached the end of its service life.

Although this product was the exact replacement item, it did not fit the old fixture. It was easy enough. To replace the old fixture since the new one had screws in the same place.

This item is exactly what I needed to replace the item in my home. It comes with a wall mount, hardwire plug and instructions. Overall good products. Shipping was not next day as promised.

The installation is easy if you already have the base mounted. The smoke detector comes with a pre-installed batter.

Exactly what needed to replace my ten year old smoke detector. I like that it chimes to tell you when it's been ten years.

Works great and was easy to install. I was able to easily replace an old alarm that came with the house without having to modify anything.

This item was exactly what I was looking for. It was an easy set up and fit perfectly with what I have in my home.

The product met my every expectation. The delivery was on time and in good order. The installation had one minor hiccup which involved a very tight connector. After verifying the correct connector and the right orientation I just forced it a little bit more and it worked just fine. After installation the test went successfully. Buttoned up the smoke detector and walked away happy.

Great product. Arrived quickly and fit perfectly with the old one I had.

Easy replacement for older BRK system