FireX 4618 Dectector

I bought two of these to replace older FireX smoke detectors in a house that is going onto the market for sale.The good:- The price was competitive.- They arrived on time, which was important to me because I only had a few days to get them installed before I had to make the 14 hour drive to my new home.- They were easy to install, came with batteries already in place, with a plastic pull-tab you must pull out to activate.The bad:- They have a different power connector than the old FireX units I was replacing, so either an adapter had to be purchased (available here on Amazon, very inexpensive), or the entire power connector had to be removed and replaced with the included one, which involves working with bare wires and finding/turning off breakers.The ugly:- These arrived USPS with postage due. I was not able to take delivery of these until I paid the postman the balance of the postage that was supposed to have been covered by the seller. They are advertised as "Free Shipping", but for me were not.- When I contacted the seller they first told me that they "...have paid the shipping cost by amazon and it should not have any extra charges". I sent them a picture of the package with the USPS "Postage Due" stamp and amount I had to pay. They then advised that I "...should have refused the package".Conclusion: These smoke detectors are great, install easily, and work as designed and expected. This seller, in my case, not so much.... Buyer beware.

The package of six replacement smoke alarms were very easy to install throughout my home...One medium screw driver was used to secure alarms to existing ceiling circuit. Each of the six alarms had a fresh nine volt battery included; overall my order from Amazon was a great value!

Nice quality product. Clear instructions and worked the first time. Even came with a cover to protect sensor from paint fumes/dust which we needed as we just painted both rooms we put them in.

This was a direct replacement for my 15 year old Kidde smoke detector. The wiring harness is identical, so I had no wiring to do. This made installation a snap.But beware information is incorrect in the description;1) This is not battery powered. It is AC powered with a battery backup.2) The backup 9V battery is included.3) The model number is i4618AC4) The backup 9v battery is required

Replaced all my old Firex sensors. Unfortunately they changed their connector but the new one is included and easy to change out. If you are comfortable and safe changing your own light fixtures this is the same. If not get a licensed electrician to install!

I purchased this smoke detector as a replacement for my current system. I haven't used it yet but the price was reasonable and it matches my smoke detector system. Firex smoke detectors do a good job and I like the fact that they are hard wired but have a battery backup. The batteries last about 1 year. I recommend this purchase!!

This is a newer model of the smoke detector we had. It is easier to change the batteries and definitely works as well as the original. Like that it is compact because you hardly notice it on our ceilings.

This is replacing the unit that came with our new house 6 years ago. The old alarm started making a non stop clicking noise. It was not a low battery because that chirp sounds completely different. New one was an easy replacement since I can reuse the electric harness our electrician wired in from the old one.