$42.98
Save $27.00
was $69.98
Buy Now, Pay Later
As low as
$10
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Friday, Nov 6
At a glance
- Condition
- New
- Style
- Precision Detection
- Pattern
- SMCO210V
- Dimensions
- 5.67"D x 5.67"W x 1"H
- Weight
- 6.56 oz
- Color
- White
- Power Source
- Battery Powered
Features 5
- 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.
- Voice & location alerts tell you what the danger is and its location to help you escape safely
- Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install alarm
- 10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
- Slim profile design is half the depth of a standard alarm
Description
Be alerted to the type of danger and its location in your home with First Alert's SMCO210V 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Voice & Location Alerts. This 2-in-1 alarm provides convenient protection against both threats and meets new industry standards.
Specs 18
| Brand | First Alert |
|---|---|
| Style | Precision Detection |
| Power Source | Battery Powered |
| Color | White |
| Product Dimensions | 5.67"D x 5.67"W x 1"H |
| Item Weight | 6.56 ounces |
| Alarm | Combination Alarm |
| Sensor Type | Photoelectric |
| Unit Count | 1 Count |
| Number of Items | 1 |
| Model Number | SMCO210V |
| Item Highlight | SMCO210V Slim Profile with Voice Alert |
| Manufacturer | Resideo |
| UPC | 029054022271 |
| Item Type Name | Combination Alarm |
| Mfr Part Number | SMCO210V |
| Product Style | Precision Detection |
| Item Dimensions D x W x H | 5.67"D x 5.67"W x 1"H |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Nov 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Good for a secure feeling at home
Style: Precision Detection
Pattern Name: SMCO210V
Has never sounded an alarm. I just know it is there and hope it is working
Reviewed in the United States on July 3, 2026 by St. Louis Lady123
Important to have in your home
Style: Precision Detection
Pattern Name: SMCO210V
This alarm talks to you! It takes a few moments to get used to, but it works great!
Reviewed in the United States on August 11, 2026 by S L
DO NOT BUY-GARBAGE-CONSTANT FALSE ALARMS
Style: Precision Detection
Pattern Name: SMCO210V
These are without a doubt the most annoying, frustrating, poorly designed and poorly manufactured products I have ever put in my house. I bought three of these about 20 months ago. Within months they started giving off false alarms. Sometimes they do it in the middle of the night and ruin your sleep for the night. Sometimes it's during the day. There's never a reason, there's no hint of a fire or carbon monoxide, there's no cooking going on, there's been no construction or anything else to put extra dust in the air, they're just a very poor product. I even vacuum them on a regular basis , which I'm willing to bet you almost no one actually does even though you're supposed to. They will send you replacements , but the replacements false alarm, and then the replacements for the replacements false alarm.If one does go off now we don't think oh maybe there's a fire we need to think about getting out of the house, we just think the piece of garbage has malfunctioned again.Because of this they're not serving any purpose of safety at all. It's hard to believe that a major manufacturer can make a product this bad, but they have managed to do it. Steer clear.
...
show more
Reviewed in the United States on September 6, 2026 by ROBERT S.
I have used First Alert for over 30 years, and they are always reliable.
Style: Precision Detection
Pattern Name: SMCO210V
First of all, these units are great! I have used First Alert for over 30 years, and they are always reliable. My only issue with these new units is the ability to set the location. I was unable to set the location on 5 of the 6 units. On the 6th unit, it somehow set the location as the basement.....I do not have a basement! It does not seem to have any way to reset locations once installed. Not a big deal; however, it should be simpler than it is. If it weren't for that issue, I would have given 5 stars.
...
show more
Reviewed in the United States on August 14, 2026 by Herb
Alarm
Style: Precision Detection
Pattern Name: SMCO210V
Easy to install, perfect size, battery life lasts a long time, definitely makes us feel safe, and if it does go off, it’s definitely loud enough to hear through the house.
Reviewed in the United States on June 27, 2026 by T E
Smoke alarm
Style: Precision Detection
Pattern Name: SMCO210V
Easy to put up
Reviewed in the United States on July 15, 2026 by Pam G
Important for wood frame houses as long as it works.
Style: Precision Detection
Pattern Name: SMCO210V
So far, so good — It hasn’t randomly gone off yet for no apparent reason waking my neighbors or traumatizing my dogs. If that changes, I’ll come right back to update this review.
Reviewed in the United States on May 11, 2026 by Jess
Horrible product and ever worse customer service by First Alert
Style: Precision Detection
Pattern Name: SMCO210V
This is not a smoke detector. If you are looking for a loud alarm at any and all hours of the day after only a few months of installing it into your ceiling, look no further. This thing has been going off for three days straight saying “alert! Smoke it kitchen!”. Woke me out of a sound sleep and made it impossible to work or relax at home; constant alarms. I called their customer service for First Alert by Resideo and the agents were not helpful and frankly, some of the worst customer service I’ve ever had the displeasure of contacting. They could not seem to get my name or any information correct for the replacement and they will only replace it with the same product. There are many options for reliable smoke detectors and this is not one of them. They said that it was probably going off because of dust or a bug or debris. This is a faulty alarm and I would not recommend this to anyone. I doubt I’ll ever even receive the replacement, they kept getting my house number backward and couldn’t seem to write out my email address properly for the confirmation email. Originally I asked if I could just have a refund and the representative said “no” and then he disconnected the call and sent me to an automated survey. Just horrible.
...
show more
Reviewed in the United States on August 24, 2026 by Jenna