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First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
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First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack

4.6/5
Product ID: 602000076
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Details

  • Brand
    First Alert
  • Style
    Precision
  • Power Source
    Corded
  • Color
    White
  • Item Weight
    0.56 Pounds
  • Alarm
    Smoke CO
Hardwire with battery backup
🔗Interconnects all alarms instantly
🛠️Quick Connect Plug for easy install

Description

🚨 Stay ahead of danger with smart, seamless safety.

  • POWER OUTAGE PROOF - Battery backup ensures 24/7 protection even during blackouts.
  • SEAMLESS INTERCONNECT - When one alarm sounds, all compatible alarms alert your entire home instantly.
  • USER FRIENDLY TESTING - One-button test/silence lets you verify functionality effortlessly.
  • HASSLE FREE INSTALLATION - Quick Connect Plug means no rewiring—get protected in minutes.
  • PRECISION DETECTION TECH - Reduces false alarms from cooking, so you stay alert only when it matters.

The First Alert SMICO100-AC is a hardwired smoke and carbon monoxide alarm featuring advanced Precision Detection technology to minimize false alarms. It interconnects with compatible units for whole-home alerts, includes a battery backup for continuous protection during outages, and installs easily with a Quick Connect Plug. Designed for reliable, user-friendly home safety.

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Specifications

BrandFirst Alert
StylePrecision Detection
Power SourceCorded Electric
ColorWhite
Item Weight0.56 Pounds
AlarmSmoke, CO
Sensor TypeIonization
Number of Items1
ManufacturerResideo
UPC029054022752
Part NumberSMICO100-AC
Item Weight9 ounces
Product Dimensions8 x 7.5 x 3.5 inches
Country of OriginMexico
Item model numberSMICO100-AC
Batteries1 9V batteries required. (included)
Size1-Pack
PatternSMICO100-AC
Item Package Quantity1
Included ComponentsEasy Adapter Plug, 9V Battery
Batteries Included?Yes
Batteries Required?Yes
Battery Cell TypeAlkaline

Reviews

4.6

All from verified purchases

D**D

A Good Replacement for the SC9120B

I bought this to replace the six First Alert SC9120B alarms my builder installed about eight years ago. These were very easy to install taking less than five minutes each. I did have a few issues with some of my older models though. The builder put so much wire in some of the junction boxes that it pressed down hard on the alarms making a strap wrench, or a belt, necessary to unscrew them. Also, on one of the units, they used a screw that was too large to secure the mounting plate but there was enough room to wiggle the old plate out.A few notes…This is a direct replacement for the SC9120B but it isn’t a one-to-one match physically. You will need to install a new mounting plate. The good news is that the screw holes on the new model are universal, so they should fit most junction boxes and is very easy to install.The power connector is the same, but the receptacle on the new alarm is smaller. It does help to prevent bent pins, but you need insert the connector straight for it connect securely. When removing it from the SC9120B, I found a pair of pliers useful to get a good grip.Although the units are hardwired, they do come with battery backup using a preinstalled 9V battery. This battery is an ordinary Duracell 9V model and will likely fail in about five years. For hard to reach alarm locations, you may want to get a ten-year battery and replace them. Again, these are battery backups for hardwired alarms, so they really shouldn’t be needed very much, unlike battery-powered alarms.Like the prior model, this alarm has a green LED that indicates it’s plugged in and functioning normally. That LED is about 25% to 50% brighter than the one on the SC9120B and will light up the area around the alarm at night. Most of the light seems to leak out the “Ring” at the top of the alarm right above the indentation. It is possible to put something in that “Ring” to block the light, such as electrical tape, or, if you’re the adventurous type, open up the alarm and use a black marker to dull the LED or snip the LED entirely. Given that the LED serves as an indicator telling me it’s working as intended, and in my case, I’m planning on selling my home during the expected lifespan of the alarm, I’m opting for electrical tape.

J**N

great item

work great and easy to installed.

M**H

Easy to install.

Was able to replace all my smoke detectors with smoke and CO2 detectors. You should replace your smoke detectors every 10 years. Mine were clearly original to the house (1993). They work seamlessly with my other Smoke/CO2/Flasher alarms. They are really easy to install, and I'm glad to have the house updated.

A**R

Pleased with alarms

Delivered on time, packed to perfection & we have them installed. Great value for money.

S**P

Expensive but Necessary

Guess you can't put a price on safety, but these have gotten pretty expensive. I do appreciate the dual function, and they fit as intended. Can't say much about the quality as of yet, but hopefully they last a few years.

D**P

High Quality wired Smoke/CO monitors

Easy to install and plugs into my existing First Alert wiring. Hopefully these last longer than the builder grade one's I've been replacing.The base plate that these alarms twists into wasn't compatible with my existing units, which was wishful thinking since it's the same brand, but it was easy enough to loosen the screws, remove the prior and spin these on.Two of the three sets I ordered didn't come with the yellow protective bonnets pre-installed, which isn't a big deal but would have been a nice touch to know they've been protected from dust or other environmental contaminants prior to install.

D**G

Works for upgrrade or new installation

Needed it for a replacement of a earlier model of the same detection capabilities.Needed to replace the base but simply plug in . No need to replace the pigtail

B**C

Direct Replacement for OEM

My home isn't that old, but the builder-installed smoke/CO detectors started failing. I am not talking about the lame single beeps (always in the middle of the night) that announce that it is time to change the backup battery. No, indeed...the old units made the triple-beep that said they needed replacing. Of course, they chose the middle of the night to fail and no less than three of them failed at once.This package of three is perfect for my needs. These are a direct, snap-in replacement for the originals -- I did not have to change around the plugs or the mount. It was plug in, mount to the ring, and twist to lock. Probably the easiest home DIY project I have had in a while.Pay the extra few dollars, get the direct replacements, save yourself the headaches.

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TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

First Alert Combination Smoke And Carbon Monoxide Alarm Interconnect Hardwire | Desertcart Seychelles