Target New ArrivalsGift Ideas for DadClothing, Shoes & AccessoriesHome & DecorKitchen & DiningOutdoor Living & GardenGroceryHousehold EssentialsBabyBeautyPersonal CareSports & OutdoorsHealthWellnessLuggageSchool & Office SuppliesToysElectronicsVideo GamesMovies, Music & BooksParty SuppliesGift IdeasGift CardsPetsUlta Beauty at TargetShop by CommunityTarget OpticalDealsClearanceNew ArrivalsGift Ideas for DadBack to SchoolCollegeTop DealsTarget Circle DealsWeekly AdShop Order PickupShop Same Day DeliveryRegistryRedCardTarget CircleFind Stores
First Alert Alarm Combo AC/DC with ADP SMICO100-AC: Smoke & Carbon Monoxide Detector, Latching Alarm Indicator, Hardwired - 2 of 4First Alert Alarm Combo AC/DC with ADP SMICO100-AC: Smoke & Carbon Monoxide Detector, Latching Alarm Indicator, Hardwired - 3 of 4First Alert Alarm Combo AC/DC with ADP SMICO100-AC: Smoke & Carbon Monoxide Detector, Latching Alarm Indicator, Hardwired - 4 of 4
First Alert Alarm Combo AC/DC with ADP SMICO100-AC: Smoke & Carbon Monoxide Detector, Latching Alarm Indicator, Hardwired - 1 of 4

First Alert Alarm Combo AC/DC with ADP SMICO100-AC: Smoke & Carbon Monoxide Detector, Latching Alarm Indicator, Hardwired

$39.99 was $42.99
New lower price save $3.00 (7% reduction)

In Stock

Eligible for registries and wish lists

Save 5% every day

With Target Circle™ Card

At a glance

About this item

Highlights

  • BRK's Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning
  • Interconnects with most First Alert and BRK alarms so when one sounds, all compatible alarms sound to provide an early warning
  • Battery backup provides continuous protection during power outages
  • Perfect mount bracket keeps the alarm secure over a wide rotation range for ideal alignment and easy installation
  • Latching Alarm Indicator visually identifies the unit that initiated the alarm or low battery warning
  • Test/Silence button allows for efficient testing and temporarily silences alarm for up to 8 hours 

Description

The SMICO100-AC Interconnect Hardwired 2-in-1 Smoke and CO Alarm with Battery Backup utilizes First Alert's Precision Detection technology and meets the latest industry standards. Easily install and interconnect multiple detectors together to create an alarm system throughout your home.

The SMICO100-AC Interconnect Hardwired 2-in-1 Smoke and CO Alarm with Battery Backup includes an adapter plug that allows for easy installation. This can also be used for replacing existing hardwire alarms. The 8th generation alarm is also equipped with a battery back to provide continuous protection during power outages. Help stop unwanted removal of the detector or backup battery using the optional locking features.

Dimensions (Overall): 2 Inches (H) x 5 Inches (W) x 5 Inches (D)
Weight: .81 Pounds
Package Quantity: 1
Requires Hardwired Installation: Yes
Battery: 1 Non-Universal Alkaline
Warranty: 10 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item, please call Target Guest Services at 1-800-591-3869
TCIN: 90075128
UPC: 029054022721
Item Number (DPCI): 085-14-7215
Origin: Imported
If the item details aren’t accurate or complete, we want to know about it.

Shipping details

Estimated ship dimensions: 3.48 inches length x 6.65 inches width x 8.57 inches height
Estimated ship weight: 0.77 pounds
We regret that this item cannot be shipped to PO Boxes.
This item cannot be shipped to the following locations: American Samoa (see also separate entry under AS), Guam (see also separate entry under GU), Northern Mariana Islands, Puerto Rico (see also separate entry under PR), United States Minor Outlying Islands, Virgin Islands, U.S., APO/FPO, Alaska, Hawaii

Return details

This item must be returned to any Target store.
This item must be returned within 90 days of the date it was purchased in store, delivered to the guest, delivered by a Shipt shopper, or picked up by the guest.
See the return policy for complete information.

Q: will a smco100 smoke / carbon monoxide detector plug into a sc9120b base without hard wiring the new replacement?

submitted by Gmac - 1 year ago

  • A: Yes, the connector is the same. BUT the plastic bracket is not (the two models are just slightly different diameters).

    submitted byL - 1 year ago

  • A: Yup! I just did it and it works great.

    submitted byjayel - 1 year ago

  • A: this from First Alert website: The SMICO100-AC can be a direct replacement for the SC9120B as they use the same plug for installation.

    submitted byemauss - 1 year ago

Q: What does hardwired installation mean for this device?

submitted by Samkorie - 1 year ago

  • A: You need to have 120 volt AC power at the point you wish to mount this. That way, even if the battery should go dead, the device is still monitoring the air.

    submitted byC J S - 1 year ago

  • A: There is a special 3-wire 120 volt connection used for power. Battery is a backup in case of power failure. If multiple units are installed, when one alarm is tripped, all units will sound an alarm.

    submitted byRoger - 1 year ago

Q: What feature helps identify which alarm triggered the alert?

submitted by AI Shopping Assistant - 2 months ago

  • A: The Latching Alarm Indicator visually indicates the unit that initiated the alarm or low battery warning.

    submitted byAI Shopping Assistant - 2 months ago
    Ai generated

Q: Is a battery backup included with this smoke and CO alarm?

submitted by AI Shopping Assistant - 2 months ago

  • A: Yes, the alarm includes a battery backup to ensure continuous protection during power outages.

    submitted byAI Shopping Assistant - 2 months ago
    Ai generated

Q: What technology does this alarm use to reduce nuisance alarms?

submitted by AI Shopping Assistant - 2 months ago

  • A: The alarm uses Precision Detection advanced sensing technology to minimize cooking-related false alarms.

    submitted byAI Shopping Assistant - 2 months ago
    Ai generated

Q: How does this alarm interconnect with other units?

submitted by AI Shopping Assistant - 2 months ago

  • A: It can connect with most First Alert and BRK alarms, allowing simultaneous alerts throughout your home.

    submitted byAI Shopping Assistant - 2 months ago
    Ai generated

Q: How does the test/silence button function on this device?

submitted by AI Shopping Assistant - 2 months ago

  • A: The test/silence button allows for efficient testing and silences the alarm temporarily for up to 8 hours.

    submitted byAI Shopping Assistant - 2 months ago
    Ai generated

Q: Is this photo electric

submitted by Jim - 1 year ago

  • A: No. The "I" in the model number SMICO100-AC denotes "Ionization" detector, not photo. Research on internet the benefitd of having photo and Ionization detectors, rather tha al of one or the other.

    submitted byGlasspar - 6 months ago

Q: Does it come with the special 3-wire 120 volt connector?

submitted by PM - 1 year ago

  • A: Yes, ot shows it in one of the pictures.

    submitted byTodd - 1 year ago

Q: What do I order so get voice

submitted by Ted - 1 month ago
See all questions (16)

Additional product information and recommendations

Discover more options

Frequently bought together

Guests also viewed

4.3 out of 5 stars with 21 reviews
quality: 3.88 out of 5
value: 3.71 out of 5
62% would recommend
8 recommendations
5 out of 5 stars
Thumbs up graphic, would recommend
5 March, 2026Verified purchase

(no review title)

had to replace old alarm with this one. worked out perfect. sinked in with others too. price was excellent.
coley
quality: 5 out of 5
value: 5 out of 5
1 guest found this review helpful. Did you?
5 out of 5 stars
Thumbs up graphic, would recommend
16 February, 2026Verified purchase

First Alert

Great protection at a great price.
RIchard
quality: 5 out of 5
value: 5 out of 5
Did you find this review helpful?
5 out of 5 stars
15 February, 2026Verified purchase

(no review title)

Easy to assemble
N A
Did you find this review helpful?
5 out of 5 stars
Thumbs up graphic, would recommend
23 January, 2026Verified purchase

Easy install

Very easy to install, took only a couple minutes.
JB
quality: 5 out of 5
value: 5 out of 5
1 guest found this review helpful. Did you?
5 out of 5 stars
Thumbs up graphic, would recommend
9 January, 2026Verified purchase

Good Replacement for Old ones

Good replace for my old First Alert Smoke Detector. The base from the old one is bigger so you will need to install the base from the new one but that is real easy. Only downside maybe is that discoloration from the uncovered portion of the ceiling because the base is smaller on the new one. But you can just wipe it clean, touch up a bit, or just leave because it now that noticeable. Now i dont need to purchase a separate CO detector with this combo. I will purchase more later.
Larry
quality: 5 out of 5
value: 5 out of 5
Did you find this review helpful?
1 out of 5 stars
Thumbs down graphic, would not recommend
15 November, 2025

Unusable

This device is a complete failure. I simply cannot twist it into the mounting plate because it doesn’t fit. Who designed such a thing that’s completely useless. Going to return it. Waste of time and effort.
anonymous
quality: 1 out of 5
value: 1 out of 5
3 guests found this review helpful. Did you?
2 out of 5 stars
Thumbs down graphic, would not recommend
6 October, 2025Verified purchase

50/50 chance of functionality

I bought two of these for a 26 – F smoke inspection for a property I have listed. Only one of them worked.
Emily Shimansky
quality: 2 out of 5
value: 2 out of 5
Did you find this review helpful?
3 out of 5 stars
Thumbs down graphic, would not recommend
11 April, 2025

Lots of Light!

This is poorly made. Instead of a little green light, light escapes in multiple places: 1) the vent for the sound 2) the space around the button and 3) between the unit and the ceiling. This happened on all 3 professionally installed. Purchase only if you want a lot of green light when trying to sleep.
DB
quality: 3 out of 5
8 guests found this review helpful. Did you?
5 out of 5 stars
Thumbs up graphic, would recommend
9 January, 2025Verified purchase

HOME SAFETY

IT IS BETTER TO BE SAFE THAN SORRY
GU1
quality: 5 out of 5
value: 3 out of 5
1 guest found this review helpful. Did you?

Get top deals, latest trends, and more.

Privacy policy