
First Alert
First Alert Onelink Smart Smoke + Carbon Monoxide Alarm – Battery Operated (2nd Generation)
Sensors · Security
HomeKit onlySmokeCarbon monoxideWi-FiBluetooth
Where to buy
Store searches look up “First Alert Onelink Smart Smoke + Carbon Monoxide Alarm – Battery Operated (2nd Generation)” at each retailer. Availability and prices vary by region; check that the model you buy says it works with Apple Home or Matter.
From store listings
From the Bing Shopping page for “First Alert Onelink Smart Smoke & Carbon Monoxide Alarm Battery Operated”.
In ReReHome
Readings from eleven sensor types, any of which can trigger an automation.
And every other characteristic or Matter attribute it exposes.
Reports to Apple Home
Connectivity
- Wi-Fi
- Bluetooth LE
How it reaches your home
- HomeKit over Wi-Fi
Identifiers
| Manufacturer | First Alert (BRK Brands) |
|---|---|
| Model / SKU | 1042253 |
| Model / SKU | Onelink Smart Smoke + CO Alarm (battery, 2nd gen) |
Reported versions
| Version | Date | Source |
|---|---|---|
| Firmware 3.1.709 | homedevices.app |
Compatibility notes
- Lumen (CA) lists 1042253 as a battery Onelink smoke/CO alarm; HomeKit per the 2nd-gen Onelink line.
- Reported by HomeKit users in the HomeDevices community catalog (1 record, CA); not on Apple's accessory page.
- Category from the HomeKit category reported by the record.





