Fire Alarms Smoke Detectors, Smoke Alarm Battery Operated,Fire Alarm with Test Button & Low Battery Signal, Photoelectric Technology Fire Detectors for Bedroom and Home (6-Pack)

easy to instal and loud enough to hear and wake you when sleeping

Came with everything ready to install out of the box.

So, I hear said that if you have a smoke detector, it's best if it stays on the wall/ceiling where it's placed.Not sure if anyone told these guys.I purchased a 6-pack and1. 1 set of "10-year batteries" were dead!2. The darn things spend more time falling off the walls/ceiling than staying up.I do a round a few times a week, to see which ones are on the floor.I ended up spending like $15 on Gorilla spray-on glue to try and keep them in place. Time will tell.Thank Gd, I've never needed it, so I don't know if it works correctly (and Gd willing we will never need to find out), but dead batteries and falling off, not huge confidence boosters.

Pleasant transaction. Items as described. And the turn around time was quick!

Came fast and easy to install

The media could not be loaded.  The packaging was good and the set even included batteries and the mounting hardware.Unfortunately, the interconnect feature is not consistent and would either not alert the others or would alert two out of the three. The worst part is they did not alert when smoke was clearly present. I'm not a smoke detector professional but I'm pretty sure a smoke alarm should alert you to the presence of smoke as it's kind of in the name. As you'll see from the video I used a smoke pen to simulate a fire. In my testing, the alarm didn't go off 2 out of 3 times and the one time it did, was over a minute after smoke was present. I'd show those videos as well but I can only upload one video per review. I haven't tested many smoke detectors but I would avoid these.# UpdateThe company does apparently listen to reviews and reached out to me and offered to send a replacement. I responded and agreed for them to send out a working set. However, that set was returned to sender and I did not get to test its reliability.

These are smaller and appear cheap when comparing to other smoke alarms I’ve owned. As long as they work I’m ok with them.

Put these in my rental