SKU: 34337559774

First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and CO Alarm with Slim Profile Design

Sale price$59.84 Regular price$66.49
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and CO Alarm with Slim Profile DesignThe First Alert SMCO210 Sealed 10 Year Battery Combo Smoke and CO Alarm with Slim Profile Design uses First Alert's Precision Detection advanced sensing technology and meets new industry standards. This 2 in 1 alarm provides convenient protection against both fire and carbon monoxide (CO). The alarm is also equipped with a 10 year sealed battery to eliminate the need for battery replacements and low battery chirps. First Alert's Precision Detection

The First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and CO Alarm with Slim Profile Design uses First Alert's Precision Detection advanced sensing technology and meets new industry standards. This 2-in-1 alarm provides convenient protection against both fire and carbon monoxide (CO). The alarm is also equipped with a 10-year sealed battery to eliminate the need for battery replacements and low battery chirps.

  • 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
  • Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install detector
  • 10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
  • End-of-life warning lets you know when it’s time to replace the alarm
  • Slim profile design is half the depth of a standard alarm
  • Test/silence button for efficient testing to ensure detector is working properly

      Features

      Reliable 2-in-1 Protection

      Easily install the SMCO210 10-Year Battery Combo Smoke and CO Alarm for reliable 2-in-1 protection against both threats in a single alarm. With no wiring required, simply mount the detector on a wall or ceiling throughout your home to help be alerted to a carbon monoxide or fire emergency.

      10-Years of Uninterrupted Protection

      The Combination Smoke and CO Alarm's built-in 10-year sealed battery provides continuous power for the life of the alarm meaning there is no need to worry about battery replacements. This eliminates low battery chirps for the life of the detector, plus the cost and hassle of changing the batteries.

      Slim Profile Design

      The slim profile combination alarm is half the depth of a standard alarm and is equipped with superior features. The low-profile design is sleek and compact to help the detector blend seamlessly with most home decor.

      Efficient Testing Feature

      Test the 10-year battery combo smoke and CO alarm using the single test/silence button on the front of the alarm to help ensure it is functioning correctly and silence false alarms. The end-of-life warning will help alert you when it’s time to replace the detector because alarms don't last forever. See user's manual for information on how and when to test and replace alarms.

      Shipping Notes
      • Free Standard Shipping on $100+ Orders to the USA.
      • Except Preorder products are shipped in 48 hours.
      • Delivery to the USA:
      1. Standard Shipping : 3-10 business days
      • If time is of the essence, please consider selecting expedited delivery for faster service.
      Exchange/Return Notes
      • We offer a 30-day return/exchange service after receiving.
      • Final sale items are not eligible for returns or exchanges.
      • To process your return/exchange, please contact us at [email protected]
      • Please click here for more details>>> Return & Exchange Policy
      SKU: 34337559774

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      4.1 ★★★★★
      Based on 23 reviews
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      N
      Verified Purchase
      NMMo
      Port Orchard, US
      ★★★★★ 5
      Better than woxer imo
      Color: Multicolor B (5-pack), Size: Large
      I've been buying Woxers, but theyre super expensive for what youre getting. These are similar in feel and style so i switched over. Another nice thing is i dont have to deal with wedgies like i do with the woxers. Theyre not perfect for wearing when its hot, youre still gunna sweat and these dont wick away sweat super well. But i havent seen many brands that do, and these are not the worst. Im 5'7" and 145lbs and these are comfy and tight enough but not snug. They still leave a bit of indentation on the love handles. You CAN tell that youre wearing them under pant if they are tight.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on May 11, 2026
      L
      Verified Purchase
      Liz Newman
      Lowell, US
      ★★★★★ 5
      Comfortable and cool. Does not ride up.
      Color: 01-multicolour (4-pack), Size: Medium
      Extremely comfortable. Stays cool. Ample coverage. Quality material. They do not creep up. I ordered a medium which I generally take a size small. I have reordered and will reorder again to add more colors to my collection.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on May 18, 2026
      J
      Verified Purchase
      Janola
      Houston, US
      ★★★★★ 5
      Great Value for Cool Thigh Protection
      Color: 02-multicolour (4-pack), Size: XX-Large
      For the price, I'm not sure there are better women's boxer shortlettes anywhere. I've tried more expensive brands, and for quality and cooling, these are right up there. I have other bamboo viscose undies that still get gross when I get sweaty in the summer, but these, with the large mesh panel, really help wick away a lot of that moisture, keeping you feeling dryer and cooler. I find that the leg openings are comfortable and don't roll up! and the waist band doesn't dig, nor does it roll down. These do not provide any compression, and I wasn't looking for any. I just wanted some cooling, thigh protecting women's boxers that wouldn't break the bank. These are them! Bonus- I've washed them and put them in the dryer (following their instructions), and they haven't shrunk; they look about the same and are nice and soft.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on July 28, 2025
      R
      Verified Purchase
      Reviewer
      New York, US
      ★★★★★ 4
      Great for the entire family but expensive
      So far so good. The brand of boxers we had been buying changed their style and construction so we needed to find an alternative. These have held up well so far to multiple weeks of frequent washing and wearing from the entire family. We did size up from the usual 6/M we normally buy and ordered large to prevent the legs from rolling up which worked out great. Our daughter likes the length and how soft the fabric is for wearing under skirts and gym shorts and liners stay put without moving or leaking as another reviewer mentioned. Our son says they are comfortable and fit well being just supportive enough without being constrictive. We all agree that there seems to be not enough fabric in the back as they tend to be much tighter across the backside than the front and that also causes the waist band to ride lower in the back than the front. These have better seam placement than some brands we tried with no seam across the lady bits and no seam down the middle of the back side so they are more much comfortable but the cost is also much higher and that is why we're only giving it 4 stars. These will stay in the rotation until we find something cheaper that both us and the kids like.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on January 24, 2026
      B
      Verified Purchase
      Brittany
      Whiting, US
      ★★★★★ 5
      Pregnant lady review! Soft, comfortable, cool.
      Color: 03-multicolour (4-pack), Size: Large
      So soft, comfortable and cool. I'm pregnant and I've gained weight in my legs. I love wearing dresses but my thighs were rubbing together too much. These are perfect to wear under dresses. I also wear them under my bibs at work and it keeps me from getting overheated but I don't have to worry about whether or not my underwear show since they just look like shorts. I wish these came in maternity. I just keep them below my belly. I'll be buying more for sure.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on April 8, 2026

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