Ring Smoke and CO Listener — Alarm Sound Add-On
$39.99
Final price set by Amazon · may vary
EDITORIAL REVIEW: 4.2/5 — WC Safety Review of the ring smoke and co listener, a smart smoke and CO alarm listener. Editorial assessment by Steven Eaton, WC Safety editor, based on published Ring specifications and c...
Key Features
- Ring Alarm ecosystem integration connects existing smoke and CO detector alerts to Ring smart home system
- Acoustic detection technology recognizes UL-listed smoke and CO alarm tones without replacing existing detectors
- Mobile alert notification Ring app alerts when smoke or CO alarm sounds are detected
- Professional monitoring compatible Ring Protect plan integration for emergency dispatch activation
- No detector replacement required works alongside existing installed smoke and CO alarms
- Ring Alarm system integration Ring Alarm Base Station required; Ring Protect plan recommended for professional monitoring
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EDITORIAL REVIEW: 4.2/5 — WC Safety Review of the ring smoke and co listener, a smart smoke and CO alarm listener.
Editorial assessment by Steven Eaton, WC Safety editor, based on published Ring specifications and category fit. We did not laboratory-test this product.
Editorial assessment by Steven Eaton, WC Safety editor, based on published Ring specifications and category fit. We did not laboratory-test this product.
The Ring smoke and co listener is a smart add-on that hears your existing smoke and CO alarms and sends an alert to your phone - it is not itself a detector.
CHECK PRICE ON AMAZON → SHOP SMOKE & CO ALARMS →
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Why the ring smoke and co listener adds phone alerts to your existing alarms
Your alarms cannot reach you when you are away from home. The Ring smoke and co listener bridges that gap by listening for your existing alarms and notifying your phone when they sound. As smoke & CO alarms go, this is the phone-alert add-on pick, and the best CO detector guide and the best smoke detectors guide put it in context. It carries your existing alarms' warning to your phone.
Safety first: this listener alerts your phone when your existing smoke or CO alarms sound — it is not itself a smoke or CO detector and does not replace UL-listed alarms in the home. If an alarm sounds or you are notified, treat it as real: get everyone out and evacuate and call 911. Keep working UL-listed smoke and CO alarms in place, keep the listener powered and connected, and test the whole setup on a schedule so you know the notification path works.
What the ring smoke and co listener listing documents
From the listing: it listens for existing alarms; sends a phone alert when they sound; and works as a smart-home add-on. These are true smoke and CO alarm listener and alarm sound listener credentials as a smart alarm add-on. Confirm the hub, subscription, Wi-Fi, and compatible-alarm requirements on the listing. As with any life-safety device, the alarm or extinguisher is one layer of home protection — combine detection, suppression, an escape plan, and regular testing rather than relying on a single device. Buy from a listing that states the specifications and safety listings plainly, keep the paperwork, and note the manufacture and end-of-life dates when it arrives so replacement never slips, because a device past its service life can fail silently exactly when it is needed most.
How the ring smoke and co listener compares
Weigh it against the First Alert SMCO410, the Huideonne XY-S510COM, the Kidde 30CUAR, the Kidde 900CUAR, the X-Sense SC01. The CO placement guide and the CO exposure symptoms guide help you choose.
Choosing the right home life-safety device
Match the device to the hazard and the room: smoke alarms for fire, CO alarms for combustion appliances and attached garages, combination units where you want both, and a rated extinguisher within reach of the kitchen and shop. Browse the smoke & CO alarms, carbon monoxide alarms, smoke detectors, CO detectors, smart CO alarms collections; and read the home fire safety guide to plan whole-home coverage.
Where it fits by home and orders
The Ring smoke and co listener suits homeowners who want away-from-home notification layered on top of working UL-listed alarms - compare it with the X-Sense SC07, browse the wider carbon monoxide alarms and smoke detectors ranges, and confirm the hub, subscription, and compatible-alarm requirements on the listing. Whole-home coverage is the goal: an early-warning device in each key room, a rated extinguisher within reach of the highest-risk spots, and a practiced escape plan tie the pieces together, so read the home fire safety guide to map what each level of your home still needs. For multi-unit or property orders, quantity purchasing runs through a free Amazon Business account — volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations, with the walkthrough linked in our footer.
Two standards, two hazards, one housing
A combination smoke and carbon monoxide alarm is listed to two separate standards, and it is worth knowing they are not interchangeable. UL 217 covers the smoke side; UL 2034 covers carbon monoxide, setting alarm response as concentration-and-time pairs and equally requiring the unit not to sound at low concentrations, so nuisance alarms do not train people to ignore it.
NFPA 72, the National Fire Alarm and Signaling Code, governs placement and interconnection. The two hazards do not want the same location — smoke rises, while CO mixes fairly evenly with air — which is the practical argument for a combination unit outside sleeping areas, and against relying on one device to cover a whole floor.
Both sensing elements have a finite life that runs from manufacture, not installation. Smoke sensors are commonly rated to 10 years and CO cells to 7–10; the unit is replaced at the manufacturer's stated end-of-life regardless of whether it still chirps.
Two standards, two hazards, one housing
A combination smoke and carbon monoxide alarm is listed to two separate standards, and it is worth knowing they are not interchangeable. UL 217 covers the smoke side; UL 2034 covers carbon monoxide, setting alarm response as concentration-and-time pairs and equally requiring the unit not to sound at low concentrations, so nuisance alarms do not train people to ignore it.
NFPA 72, the National Fire Alarm and Signaling Code, governs placement and interconnection. The two hazards do not want the same location — smoke rises, while CO mixes fairly evenly with air — which is the practical argument for a combination unit outside sleeping areas, and against relying on one device to cover a whole floor.
Both sensing elements have a finite life that runs from manufacture, not installation. Smoke sensors are commonly rated to 10 years and CO cells to 7–10; the unit is replaced at the manufacturer's stated end-of-life regardless of whether it still chirps.
Frequently asked questions
What is the ring smoke and co listener?
A smart listener that hears your existing smoke and CO alarms and alerts your phone. It does not detect smoke or CO itself - it listens for your existing UL-listed alarms and notifies your phone when they sound.
Does it replace my smoke or CO alarms?
No. It is an add-on. You still need working UL-listed smoke and CO alarms in the home; the listener only forwards a notification when those alarms activate.
What does it alert me about?
When a compatible existing alarm sounds, it can send a notification to your phone so you know even when you are away. Confirm the compatible alarm types and app requirements on the listing.
What if I get an alert?
Treat it as real: if anyone is home, get them out and call 911; if you are away, notify anyone in the home and call 911 or a neighbor. Do not assume it is a false alarm.
What does it need to work?
Confirm the hub, subscription, Wi-Fi, and app requirements on the listing. A listener that is offline cannot notify you, so keep it powered and connected.
Does it work in a power outage?
Confirm backup behavior on the listing. Your primary alarms should have their own power and battery backup regardless of the listener.
Where do I place it?
Place it within hearing range of the alarms it must detect, per the manufacturer instructions. Test that it hears each alarm you rely on.
How do I test it?
Test the whole path: sound each alarm and confirm the notification arrives. A monitoring add-on is only useful if the alert actually reaches you.
Is it a monitored alarm service?
Confirm on the listing whether it is a self-notification device or part of a monitored service. Self-notification depends on you acting on the alert.
Does it detect anything on its own?
No - it is a listener, not a detector. Keep independent, working smoke and CO alarms as your primary protection.
Does it replace an escape plan?
No - notification buys awareness; a practiced escape plan and working alarms save lives. Keep all three.
How do I order several?
Quantity purchasing runs through a free Amazon Business account - volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations. The bulk-ordering walkthrough is linked in our footer.
Brand / Vendor
Ring
Model / SKU
B0CL5MMTDB
Product Type
VDO_DEVICES
Condition
New
MPN
B0CL5MMTDB
Price
$39.99 (Amazon)
Rating
2.4 / 5 — 27 Amazon ratings
Availability
Check current availability on Amazon
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Coverage focuses on equipment built for professional use in manufacturing, construction, and industrial environments.
Independent Product Research
Product information is compiled from manufacturer specifications, published standards information, compatibility data, and other cited sources.
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Verified Buyer Reviews
Customer Reviews
★★☆☆☆2.4 / 5· 27 ratings on Amazon
★☆☆☆☆
Don’t work and likes to call fire department!
I bought 3 of these updated Ring smoke/CO listeners in March 2026. Amazon said they would be released in 1 month. No problem. They arrived but would not set-up properly. Ring customer service said the Ring app has not been updated to work with them, and it would be another month. Amazon sent me a email early June saying it was now updated, and last night (14Jun) I was able to set my 3 listeners up via the Ring app. However, it will only recognize the CO portion of my USI smoke/CO alarms. So it cannot detect the smoke alarms. I spent an hour talking to the Indian customer support team, who transferred to their more fluent English speaking Tier 2 team, but none were able to fix the problem. During installation you must push the test button of your smoke detector, and the listener learns the tone. However, while doing this my listener in another room heard my other smoke detector and started alerting. I got a notification in my phone and hit Dismiss. About a minute later my wife got a call from Ring saying the fire department was on their way. She said NO but a ring said they have to send them. Completely ridiculous. I declined via the notification in about 5 seconds, and my wife also declined in the phone. The fire department indeed came over. If I get a bill I’m sending it to Ring. This is asinine. So be careful if installing more than 1 of these. I recommend installing 0. Trying to see about a return even though I bought these months ago.
Verified Purchaser · June 15, 2 · ✓ Amazon Verified Purchase
★★★★★
Great for Connecting a House full of wired smoke detectors to wireless notifications
Why I need this: I have a golden retriever that is part of the family, and she gets left home alone occasionally. Having this device allows me to quickly get a response from the fire department, and I hope to save her if we are not at home. I already have Ring Pro monitoring, which is not required, but something I wanted.This product is not a smoke detector. If you need a smoke detector, you can buy a Ring-compatible one. I bought some Ring-compatible Kidde smoke detectors for two of the buildings on my property that did not have smoke detectors. For the house, I had wired smoke detectors throughout, and they are all connected, so if one sounds off, they all do. This little device allows me to make those devices ring compatible.It was much smaller than I was expecting; it runs on two AA batteries that come with it. Like all Ring products, it is installed via the Ring App, so limited printed instructions are needed. The App walks you through the process from opening the device to updating and installing on the wall or ceiling. It has sticky tape on the back, which you could use to install it, but I just used the two supplied screws.There is a QR code on the instructions and also in the battery compartment that you use to activate it in the app. It will also allow you to test your existing smoke detector and listen for it to ensure it can hear and recognize it. The app also allows you to monitor the device's health, including whether it is online and its signal strength. Battery health is located at the top of the device's screen.
Verified Purchaser · June 17, 2 · ✓ Amazon Verified Purchase
★☆☆☆☆
Not worth your time. Wait for Ring to fix their product.
Looked great. Smaller than I thought. It can't detect smoke or CO by itself and is reliant on existing device. Not ideal but was ok with it so tried to install. Followed all instructions on set up and it won't finish. Wifi is strong and updated without issue but won't finish testing no matter what i do. Waited over a month to receive product but being a guinea pig for testing new ring product was not a good idea on my part. Time to return.
Verified Purchaser · June 16, 2 · ✓ Amazon Verified Purchase
★☆☆☆☆
Would not connect to Ring app.
Product refuses to connect with the Ring app. This version is objectively worse than the original z wave version which would have connected to the alarm system in seconds. This version requires amazon sidewalk which I have enabled and according to the chatbot I also have a sidewalk compatible camera installed which is supposed to act as a sidewalk gateway. But no matter what I tried, the smoke and co listener refused to connect with the ring app. The sidewalk connection seems to be the big difference here. It appears that someone decided to create a proprietary protocol to replace Wi-Fi (like the ring cameras use) and z wave (like the ring alarm sensors use). Not sure why anyone would do this, especially since it doesn’t seem to work very well.
Verified Purchaser · June 9, 20 · ✓ Amazon Verified Purchase
★★★★★
Don’t Read the Other Reviews!
Worked perfect for me!I was nervous after reading the other reviews, but as long as you have a strong wifi connection for the update and you install it as directed, you should have no issues getting it set up. Great product for a great price!
Verified Purchaser · June 13, 2 · ✓ Amazon Verified Purchase
★★★☆☆
REVISED - They didn't work at first - but Ring support contacted me
Posting an amended review:While the initial experience was frustrating (see below). Right before I was about to bring the devices to the return drop off, I noticed an email from Ring Support. We set up a call for the week after and the Support team did help to eventually pair the device. Turns out it wasn't user error, so I wasn't crazy. But we did have to do a reset on the device and then the pairing worked. So I've changed my rating.Original ReviewI can't give it any stars because the devices didn't work. Context: I'm actually a big ring ecosystem user. Have the outdoor cameras (some wired, some standalone with solar panels), have the doorbell, even have the indoor cameras. So I figured, why not stay in the ecosystem? However, upon unboxing the device (BOTH DEVICES, as I ordered two of them), and attempting to install the device, they simply would not update; I must have tried re-doing the update at least 3 times per devices, no dice. They would reach the end and then say "device could not update" - see screenshot.Clearly not a blip or oversight if BOTH devices had the same problem. Total garbage. Do not buy.Oh and Ring:What an embarrassing product launch. All the work to trip over a simple device update loop.
Verified Purchaser · June 12, 2 · ✓ Amazon Verified Purchase
★☆☆☆☆
Won't Detect Alarm - Useless
Many attempts to have it detect my alarm and it will not. Totally useless. Installed exactly as instructions state 3-6" from existing smoke alarm. Should be simple to setup and use. NOT a product I can recommend unless they do some serious updates to fix it.
Verified Purchaser · June 16, 2 · ✓ Amazon Verified Purchase
★☆☆☆☆
WASTE OF TIME. Terrible product
BY FAR THE LARGEST PIECE OF crap product.I called after hours of it not being an “easy set up” like advertised and she said I needed a minimum amount of Wi-Fi. Then she said that I had the minimum amount of Wi-Fi, but I needed to contact my Wi-Fi provider and they would help me set it up.. waste of money don’t waste your time.
Verified Purchaser · June 15, 2 · ✓ Amazon Verified Purchase
★★★★★
Compact and easy to install.
Easy to install and is very compact. Even came with Duracell batteries installed using a plastic pull tab to activate. Understand this is a listening device and does not detect smoke or carbon monoxide. Setup was easy and adds piece of mind when away from home. I’ll be curious to see what battery life looks like.
Verified Purchaser · June 13, 2 · ✓ Amazon Verified Purchase
★★★★★
Simple set up
No issues installing, connecting, or testing.
Verified Purchaser · June 14, 2 · ✓ Amazon Verified Purchase
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Frequently Asked Questions
What is the ring smoke and co listener?
A smart listener that hears your existing smoke and CO alarms and alerts your phone. It does not detect smoke or CO itself - it listens for your existing UL-listed alarms and notifies your phone when they sound.
Does it replace my smoke or CO alarms?
No. It is an add-on. You still need working UL-listed smoke and CO alarms in the home; the listener only forwards a notification when those alarms activate.
What does it alert me about?
When a compatible existing alarm sounds, it can send a notification to your phone so you know even when you are away. Confirm the compatible alarm types and app requirements on the listing.
What if I get an alert?
Treat it as real: if anyone is home, get them out and call 911; if you are away, notify anyone in the home and call 911 or a neighbor. Do not assume it is a false alarm.
What does it need to work?
Confirm the hub, subscription, Wi-Fi, and app requirements on the listing. A listener that is offline cannot notify you, so keep it powered and connected.
Does it work in a power outage?
Confirm backup behavior on the listing. Your primary alarms should have their own power and battery backup regardless of the listener.
Where do I place it?
Place it within hearing range of the alarms it must detect, per the manufacturer instructions. Test that it hears each alarm you rely on.
How do I test it?
Test the whole path: sound each alarm and confirm the notification arrives. A monitoring add-on is only useful if the alert actually reaches you.
Is it a monitored alarm service?
Confirm on the listing whether it is a self-notification device or part of a monitored service. Self-notification depends on you acting on the alert.
Does it detect anything on its own?
No - it is a listener, not a detector. Keep independent, working smoke and CO alarms as your primary protection.
Does it replace an escape plan?
No - notification buys awareness; a practiced escape plan and working alarms save lives. Keep all three.
How do I order several?
Quantity purchasing runs through a free Amazon Business account - volume pricing, PO numbers at checkout, and tax-exempt eligibility for qualifying organizations. The bulk-ordering walkthrough is linked in our footer.