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Description
Battery Operated Smoke and Carbon Monoxide Combination Detector with Wire-Free Interconnect and Voice Alarm (2-pack)The Kidde 2 in 1 Battery Operated Wire Free Interconnected Combination Smoke and Carbon Monoxide Alarm with Voice provides two important safety devices in a single unit. The alarm is powered by 3 AA batteries and features a voice alarm that warns of smoke or carbon monoxide danger. The voice alert also lets you know when it's time to replace your batteries. This alarm features wire free interconnectivity with other Kidde KN COSM B RF units (up to 12
The Kidde 2-in-1 Battery Operated Wire-Free Interconnected Combination Smoke and Carbon Monoxide Alarm with Voice provides two important safety devices in a single unit. The alarm is powered by 3 AA batteries and features a voice alarm that warns of smoke or carbon monoxide danger. The voice alert also lets you know when it's time to replace your batteries. This alarm features wire-free interconnectivity with other Kidde KN-COSM-B-RF units (up to 12 total). If one unit is triggered, all interconnected alarms will sound. Wire-free interconnectivity allows for easy interconnect setup and eliminates the need for expensive rewiring. You can even install this smoke detector in a detached garage or workshop and be alerted by another detector in the house..- Powered by 3 AA alkaline batteries for continuous protection, even during power outages
- UL # 900-0225-RF
- Voice alert tells user to if the battery is low
- Voice alarm announces "Fire! Fire! Fire!", when a smoke or fire hazard is detected and announces "warning! carbon monoxide" when a CO hazard is detected
- Smart touch button temporarily silences nuisance alarms, low battery chirps, and tests the operation of the unit and interconnected units
- Internal timer reminds you to replace your unit after 10 years to ensure the most reliable protection
- Ionization sensor may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms
- Interconnect is not required; this alarm also functions as a stand-alone Smoke and Carbon Monoxide detector
- 10-year limited warranty
- UL/CSFM ref.UL # 900-0225-RF
- *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
- Smoke and carbon monoxide detectors utilize an ionization sensor to detect fire hazards and sound an 85 db alarm when a hazard is detected
- UL/CSFM Ref. Kidde Part KN-COSM-B-RF
Features
| Item Weight | 2 |
| Alarm Type | Carbon Monoxide,Smoke |
| Connector/Contact Type | None |
| Pack Size | 2 |
| Alarm/Detector Features | Hush Feature,Interconnected,Value Pack,Voice Alert,Wire-free Interconnect |
| Hub Required | No hub connection available |
| Commercial/Residential | Residential |
| Included | Batteries |
| Returnable | 180-Day |
| Battery Type Required | AA |
| Requires Hub? | No Hub Required |
| Power Options | USB Connector |
| Voltage (volts) | 4.5 |
| Remote Access | No Remote Access |
| Alarm Sensor Type | Ionization |
| Fixed or portable | Fixed |
| Works With | No additional compatibility |
| Smart Home Protocol | Wi-Fi |
| Power Source | Battery |
| Voice Control Hub Required | No Voice Control |
| Product Height (in.) | 6 |
| Product Width (in.) | 6 |
| Product Depth (in.) | 1.75 |
| 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
4.9 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Great for teeth cleaning
Size: Extra Small, Color: Blue
My dog loves it. She’s a Yorkie and it’s perfect for her.
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Reviewed in the United States on June 10, 2026
★★★★★ 1
Made for very small dogs- don’t buy if you have medium to large dogs
Size: Extra Small, Color: Blue
2 of my 3 dogs chewed right threw it <5 minutes of getting it causing a potential choking hazard. It’s small not durable but definitely soft. Only suitable for very small dogs
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Reviewed in the United States on April 17, 2026
★★★★★ 5
Perfect for light/moderate chewers
Size: Extra Small, Color: Blue, Size: Extra Small, Color: Blue
My dog wouldn’t stop biting on the toddlers plastic dinosaur toys, so I got him this because it’s similar to plastic. But not hard enough to where it could damage his gums, also not soft enough to break apart. It’s perfect and he’s very happy with it. My dog is 6 LB toy poodle for reference, I would say this is suitable for small dogs. I saw reviews saying that their dog absolutely destroyed it immediately, but then in the review pictures their dogs were baby bulldogs/german shepards! This isn’t meant for breeds like that, but if you have a smaller dog with smaller teeth then this is ideal.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Quality and long lasting
Size: Extra Small (Pack of 2), Color: Blue
Highly Recommended!!! My 9 Shihtzu’s absolutely love the smell the durability and taste their thick so last long Thankfully I have to buy these every month!!!
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Reviewed in the United States on January 25, 2026
★★★★★ 4
Is this safe for my dog if she chews off little pieces.
Size: Small/Medium, Color: yellow
My Chihuahua loves this, however I want to know is it safe for my dog to swallow? She chews on it and gets little pieces of it and swallows them.
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Reviewed in the United States on June 4, 2026