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Description
Battery Operated Smoke and Carbon Monoxide Combination Detector with Voice Alarm and Ionization SensorThe Kidde KN COSM BA Combination Carbon Monoxide and Smoke Alarm provide two important safety devices in a single unit. This alarm includes a voice warning system that announces "Fire, Carbon Monoxide, Low Battery and Smart Hush Activation". The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement. Alarm uses ionization sensing technology Voice
The Kidde KN COSM BA Combination Carbon Monoxide and Smoke Alarm provide two important safety devices in a single unit. This alarm includes a voice warning system that announces "Fire, Carbon Monoxide, Low Battery and Smart Hush Activation". The voice alarm eliminates any confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement.- Alarm uses ionization sensing technology
- Voice alert announces the type of hazard; ideal for bedrooms
- Easy to install alarm that is suitable for all areas of the home and has a 7 year limited warranty
- Combined carbon monoxide and smoke alarm - single unit can be installed where previously, two were needed
- Low battery warning - the unit warns of a low battery condition by announcing "low battery
- Hush feature - temporarily silences nuisance alarms
- Battery Included
- Compatible with Kidde, FireX, Code One, and Sentinel products
- Note: product may vary by store
- *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
- Smoke and carbon monoxide detector utilizes an ionization sensor to detect fire hazards and sounds an 85 db alarm when a hazard is detected
Features
| Item Weight | 1 |
| Alarm Type | Carbon Monoxide,Smoke |
| Connector/Contact Type | None |
| Fixed or portable | Fixed |
| Alarm/Detector Features | Hush Feature,Voice Alert |
| Commercial/Residential | Residential |
| Pack Size | 1 |
| Included | Batteries |
| Returnable | 180-Day |
| Power Source | Battery |
| Battery Type Required | AA |
| Voltage (volts) | 4.5 |
| Alarm Sensor Type | Ionization |
| Product Height (in.) | 1.7 |
| Product Depth (in.) | 5.75 |
| Product Width (in.) | 5.75 |
| Certifications and Listings | UL Listed |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Cheap, and effective!
Color: Black, Number Of Shelves: 4, Size: 15.7in
Looks good, works great, low cost. I'll be purchasing more in the future.
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Reviewed in the United States on May 12, 2026
★★★★★ 4
Cute for coffee bar!
Color: Black, Number Of Shelves: 4, Size: 15.7in
Great for above my coffee bar. Easy to mount and align. Seems stable!
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great shelves, strong, secure, sturdy, decent size, unbeatable price.
Color: White, Number Of Shelves: 4, Size: 15.7in
Easy installation fits where we wanted them. Stable strong secure snug fit. Cleans easily with dust wipe. I would recommend buying these.
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Reviewed in the United States on May 19, 2026
★★★★★ 3
The shelves sag away from the wall overtime
Color: White, Number Of Shelves: 2, Size: 15.7in, Color: White, Number Of Shelves: 2, Size: 15.7in
Although the wood quality and finish of the shelf are clean and well-made, the main issue is that the shelves begin to sag over time while holding around 10 pounds, even though the product listing claims they can support up to 20 pounds. They may perform better on a brick wall, but on drywall you should be cautious.
To fix the problem, I had to purchase floating shelf brackets for support, which solved the sagging issue. However, this defeats the purpose of the “floating” aesthetic. Since the shelf is in my bedroom, I can overlook it, but I personally wouldn’t install these in a common area if I wanted a clean floating look.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Love this
Color: Rustic Brown, Number Of Shelves: 4, Size: 15.7in
Love these shelves so easy to put up so beautifully made and really enjoy the way they set on my wall very sturdy also!
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Reviewed in the United States on May 21, 2026