First Alert
First Alert Onelink Smoke + CO Alarm (AC Power)
Sensors · Security
HomeKit onlySmokeCarbon monoxideWi-FiBluetooth
Where to buy
Store searches look up “First Alert Onelink Smoke + CO Alarm (AC Power)” 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
| Power Source | Wired |
|---|---|
| Installation Method | Wired |
From the Bing Shopping page for “First Alert Onelink 1042135 Smart Smoke And Carbon Monoxide Alarm Hardwired”.
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 | 1042251 |
Reported versions
| Version | Date | Source |
|---|---|---|
| Firmware 3.1.312 | homedevices.app |
Compatibility notes
- Hardwired 2nd-gen Onelink Smoke+CO alarm SKU; no listing found for this exact number, HomeKit support 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.
