Fire Alarms Smoke Detectors, Smoke Alarm Battery Operated, Fire Alarm with Test Button & Low Battery Signal, Photoelectric Technology Fire Detectors for Bedroom and Home,12 Packs

These work and they are a great value. The best thing about them is how easily they hang up and come down. They come with strong magnets that have adhesive that sticks on the smoke detector and the ceiling. They are so easy to install and pull down for battery changes or false alarms.

Very easy to install! Tested great!

Would be 5 stars, but the batteries they come with are dead. Other than that, they work really well. Very easy and versatile to mount.

What I need and it’s cheaper than any where els

Quality good, easy install, fit in old location of smoke detector perfectly. The quality of the alarm frequency was louder than expected. Plus passed all home inspections with these smoke detectors. Go to big box store and see how much a smoke detector costs - just go - youll be back buying these believe me- a smoke detector is so expensive these days- Thank You will buy again

The units I received were made in 2023. So, already they are 20% into their stated lifespan. They seem to work according to the test button, although one of the supplied batteries was a dud.If these don’t really detect smoke, I may not be able to update my review…😉

We purchased this for a rental unit. The local fire marshall will not approve them, since they are not UL listed. It is illegal to use them here. Check with your local building inspector or fire marshall before buying these. We didn't find the problem until the building was being inspected, and now we are beyond the return window.Update: the seller contacted me, offerring a full refund and apologizing for the inconvenience. I appreciate the customer service outreach, and will update this review when the refund is issued. It is good to know that they are willing to stand behind their product.

Seems very well made and is easy to install.