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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
4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Coonhound approved!
My dog love loves these treats!! She gets so excited when she sees them come out of the Amazon package.
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Reviewed in the United States on February 3, 2026
★★★★★ 5
Dogs new favorite chew!
Awesome chew...my dog loves these and sits there licking the peanut butter for awhile before even starting to chew! So far its lasting longer than other chews I give him. They don't smell bad, no upset stomach and good ingredients. Highly recommend!
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Reviewed in the United States on August 26, 2025
★★★★★ 1
A treat, not a chewing bone. Lasts only a few minutes.
Short lived - lasts only a few minutes with our Golden's. I have used other products like Natural Pet collagen rolls which last a VERY long time with our voracious chewers.
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Reviewed in the United States on November 28, 2025
★★★★★ 3
Not a happy customer
My Aussie ate the chew stick within 5min. Disappointed it didn't last longer. Won't buy again :(
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Reviewed in the United States on May 27, 2026
★★★★★ 4
Massive treats, no tummy rumbles, but a little pricey
I'm always a little tentative when ordering dog treats online, because you don't always know in advance where they're sourced from, or what weird processing might be done to them, or what weird additives might be thrown in. These are sourced in Mexico, and they seem to be straightforward in terms of ingredients. Phew!
The smell of these is not the best, but if you've fed your dog collagen treats before, I'm sure you know what you're getting into with that. The dogs loved them, for sure. These treats are MASSIVE, so if you have a small or medium sized dog, you might want to cut them into two or more pieces. For my 60ish pound dogs, they were very large but manageable, and the way their eyes lit up when I presented it to them, it was like Christmas. LOL
The only reason I'm docking a star is because these are not long-term chews, at least for my dogs. Yak chews will generally last for a couple of hours for them, which I break up over several days by taking the treat away after a while and giving it back to them the next day. These chews were gone within about 5-10 minutes. (Five minutes for my spazzy dog who acts like treats will disappear if they're not hoovered it into her gullet at breakneck speed, and ten minutes for the other who likes to taste his food on the way down.) At almost $6 a pop, these are pretty expensive for 5-10 minutes of enjoyment, so this isn't going to be a treat I buy for them on the regular.
There were no issues with tummy rumbles or nausea or diarrhea afterward, so that's good. And I like getting a little more collagen in these kids because they're both getting up there in age, so their hips and joints can use a little extra love. If you've got the extra money to spring for these, or if your dog paces him- or herself reasonably with dog treats, this could be a good choice for you.
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Reviewed in the United States on September 8, 2025