Kidde Smoke Detector, 4-Inch Compact, AA Battery Powered Smoke Alarm

So Far, So Good! I placed this compact Kidde smoke detector in my small kitchen and the standard size smoke detector in my living room a couple of months ago. No problems! Very easy to just install the batteries and mount it on the ceiling! So happy that I don't have to deal with wires dangling from the ceiling again! And it's great that the batteries are included! I plan to purchase more when the others need replacing.

good quality product alarm activates as per design

Exact replacement

I only purchase Kidde smoke/carbon monoxide detectors. You get what you pay for, and this compact smoke detector was reasonably priced and super easy to install (if I can install it, you can...). Comes with instructions and batteries. Not hard-wired, so put it wherever you need it. Alarm is plenty loud. Highly recommended.

There are two basic type of smoke detectors for household - optical and ionization. The optical are becoming more common lately. They will work fine for most fires, all that create smoke. The ionization type has an advantage that it will react to combustion products before visible particles are formed. So, it could detect burning smell before smoke is formed.