First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack
$58.90
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The First Alert SMI100-AC Hardwire Interconnect Smoke Alarm with Battery Backup meets new industry standards utilizing First Alert’s Precision Detection advance sensing technology. This hardwire smoke alarm is easy to install and replace existing alarms with no need to rewire. Plus interconnect compatible alarms to create a whole home alarm system to help provide an early warning.
First Alert’s Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
Through early warning interconnect, when one alarm sounds, all compatible alarms will soun
Battery backup provides continuous protection during power outages
Alarm indicator visually identifies the unit that initiated the alarm
Quick Connect Plug included allows for easy installation with no need to rewire
11 reviews for First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack
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$58.90
The Walkers –
Works well upon testing.
Easy to install, fades into the ceiling nicely. Quality appears good. I am assuming it works well since test worked well.
Getvicious –
Easy / simple replacement for old smoke detectors
Easy replacement for old smoke detectors. Remove old smoke detector (unplug from interconnect / AC power plug), loosen two screws and remove old mounting ring, install new mounting ring and tighten the two previously loosened screws, plug in interconnect / AC power plug on rear of new smoke detector and seat it into the mounting ring – test – done. Simple, took about 10 minutes per device including moving the ladder around in the house. Good price for a great product.
ROCCO C –
Peace of Mind with a Reliable Smoke Alarm
I recently installed the First Alert SMI100-AC Hardwire Interconnect Smoke Alarm throughout my home, and I’m really impressed with its performance and ease of use.Installation was straightforward. The unit is designed to be hardwired, and it also includes a battery backup, which gives added peace of mind during power outages. It integrates well with other First Alert alarms, so if one goes off, they all do — exactly what I was looking for in an interconnected system.The alarm is loud and clear, which is essential for ensuring everyone in the home is alerted quickly in an emergency. The test and silence buttons work as expected, and the indicator lights are easy to understand (green for power, red for alarm/test).What I particularly appreciate is the build quality. It feels solid and well-made, not flimsy like some other brands I’ve tried in the past.If I had one minor critique, it would be that the instructions could be a bit more detailed for first-time installers. If you have older Wired Smoke Detectors you may need an electrician to connect the new connector if you are not comfortable do that work yourselfOverall, this is a reliable and well-built smoke alarm that offers great protection for your home. I highly recommend it!
Annika –
Quality smoke alarms
Needed to replace 2 smoke alarms in our home & went with these. Were high quality & priced well. I was able to install them very easily as well.
MurphysLaw –
Reliable brand
It was time to replace my hardwired smoke detectors and while there are tons of brands with fancy features, I want reliability and a proven track record. I am not risking my family’s safety on some discount smoke detector so I went with First Alert. I had Kidde smoke detectors previously so I had to replace the base and rewire them but it is a simple process that takes about 10 minutes for each detector from start to finish. They have only been installed a few days but they seem to work well. They include 9v batteries but be sure to check them as well as the date stamped on the back of the detector to make sure you are getting new products.My only complaint about the smoke detector design is the pivoting tray used to hold the battery – 2 of 4 were very difficult to close and the plastic is very rigid and felt like it would snap. The marks for positive/negative can also be a bit hard to see. It is worth mentioning that the green power light is very bright. It doesn’t bother me but could be an issue for some.I recommend these detectors though I had a lot of issues ordering from Amazon. They do not sell 4 packs so I ordered a 3 pack and a single detector. I purposely ordered products that were shipped by Amazon but that is not what happened. The single detector was sent immediately from a 3rd party…not Amazon but whatever. It was 2 months old and seemed fine. I was informed the 3 pack of detectors was being sent by some other 3rd party and was delayed a couple of days. So Amazon just decided to use a 3rd party even though I actually paid more to get it shipped by Amazon. Then the delay was a week and it still didn’t arrive and tracking showed it hadn’t even been shipped. I cancelled the order and placed another making certain it was to be shipped from Amazon. Except it wasn’t. Instead, it was shipped by another 3rd party and was delayed again, this time with no definitive delivery date. I had to cancel that order and went to Lowes where I paid more but at least I had them. Thankfully the single detector that was sent initially worked fine. I recommend the smoke detectors but I did not have a good experience ordering through Amazon.
Ruben Acosta –
A breeze to install.
This was a perfect exact replacement for the smoke alarm that was not working. Took about 30 seconds to install. All tests thereafter were successful. This smoke detector is now able to sound it’s alarm once again, making us feel safe for the lifespan of the product. I will buy again.
Angie –
Always great to keep stock on hand ✋️
Always great price for multi pack; easy to install & performance quality
R –
Quality
Great product and easy to install
Joe Ratchet –
Replaced an old alarm that had failed. Fit perfectly. Tested it and it works great.
Jim S. –
This hardwire smoke alarm was a snip to install. The screw holes in the mounting plate lined up perfectly with the electrical box in the ceiling. The alarm tested well. Looks good also.
steve –
Easy to replace the Kidde.Looks new and modern and is very easy to install especially if you’re familiar with wire nuts and have some at home.If not, they’re cheap at your hardware store. Use orange color wire nuts for the wires leading to the smoke alarm.Watch YouTube video on how they work. Very simple.