Detecting smoke and carbon monoxide at home with a phone alert through the Ring app even when you're away, in a 120V hardwired install with AA battery backup.
Smoke Detector
Carbon Monoxide
Ring
Alexa
What is it and what's it for?
It's a smoke and carbon monoxide (CO) detector you mount on the ceiling or wall, hardwired to your home's 120V power like any residential smoke detector, with an AA battery backup in case the power goes out. The "smart" part is that besides the local siren, it sends a notification to your phone through the free Ring app — think of it as an alert neighbor who, if they see smoke coming from your house, doesn't just shout but also lets you know even if you're not there.
Real-world use cases
At home
In a house or apartment, it replaces the basic smoke detector that only sounds locally: if it goes off while you're at work or traveling, you find out instantly on your phone instead of discovering the problem only when you get back.
In a business or workshop
In a small shop, workshop, or an office after hours (where nobody hears the siren at night), the remote alert is the difference between reacting in minutes and finding out the next day — especially if you already have other gear from this catalog running in the same panel, like the [WUYELIN 24V control transformer](/productos/B0B8Z2XV7V) if the circuit runs on low voltage.
How to avoid buying the wrong one
It's hardwired to 120V AC, not a battery-only device you can mount anywhere — you need existing electrical wiring at the mounting point, or you'll need to run it before installing.
Basic alerts (smoke, CO, low battery) are free with the Ring app, but 24/7 professional monitoring with emergency dispatch is a separate optional plan at $5/month — don't assume it's included.
It's a Ring/Alexa ecosystem device, not Matter or Zigbee — it doesn't integrate directly with this catalog's Aqara M3 hub or SONOFF Zigbee dongle; if your home is already 100% Home Assistant/Matter, check whether that already covers you before buying.
The investment takeaway
At $59.80, it costs more than a basic battery smoke detector, but the difference isn't detecting smoke itself — it's finding out about the problem while you're away from home. A local detector alerts whoever's there to hear it; this one sends the alert to your phone wherever you are, exactly the scenario where it matters most (traveling, at work, asleep behind a closed door). For a life-safety alarm carrying UL 217 and FCC certification, that difference is worth more than saving a few dollars on a model with no connectivity.
Kidde Smart Smoke & CO Alarm with Ring — Hardwired 120V + AA Battery Backup, RGCUAR-RW
Has a dry-contact output, not a plug-and-play outlet — it installs inside a box or panel to switch an external load, which makes it more versatile for retrofitting existing wiring than a traditional smart plug. Supports Matter, so in theory it works with any compatible hub (Apple Home, Google Home, Alexa) without relying solely on the Tuya/eWeLink app. Accepts AC or DC input, useful if your project already runs on 12V/24V DC.
It's a ready-to-use outlet (not a module for a panel), meant for anyone who wants immediate results without wiring anything. It runs on the closed GHome/Tuya ecosystem — no dry-contact output or native Home Assistant integration without an extra bridge. A good choice if simplicity is your priority, not if you're looking to integrate it into your own Node-RED project.
Real-time power monitoring (watts) is the differentiator over a simple plug — useful for consumption-based automations, like turning off a device when a cycle finishes. It's made by AiSeek: a real 1800W/15A rating with built-in short-circuit and overload protection, ETL and FCC certified, but 2.4GHz WiFi only (no 5GHz). The 4-pack makes it convenient to equip several points at once, but you're still dependent on the SmartLife app (Tuya-based) to configure them — and it doesn't pair directly with Alexa: you first connect it to SmartLife and link it from there as a third-party service to Alexa or Google Assistant.
