First Alert
First Alert Onelink Smoke and CO (2nd gen)
Sensors · Security
Mixed reportsWorks in Apple HomeLocal
2 reports: 1 says it works, 1 says it partly works.
Reported on r/homeassistant with HomeKit Controller.
What people report
| Integration | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| HomeKit Controller | Works Local | Works in Home Works via HomeKit to HA locally, alarm event reached Alarmo instantly | Works locally via HomeKit; discontinuedSaved copyGet First Alert OneLink while you can find the models available; Kidde does too. They work via HomeKit to HA, and they do work locally disabled from the Internet. I have had a situation where the alarm system went off and HA reported via Alarmo to my phone instantly. I just found out OneLink was discontinued. If you have the need or want, it's a must buy as there is still available stock. Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23. | Reddit comment · 2025-01 |
| Not named | Partly works | Partly in Home HomeKit detectors fine as alarms but poor smart device reporting | Fine as smoke/CO detectors, awful as smart devicesSaved copyI currently have the second generation HomeKit First Alert Onelink Smoke and CO detectors. I have 4 battery powered devices and one hardwired. These devices are fine as smoke/CO detectors, but awful for "smart devices". One of my battery operated detectors finally fell below the 50% battery threshold and the only info I could find to get a new battery was to call First Alert. I did and they told me that when the batteries die, they will send a new battery for free, and if they cannot get the battery, they will send a new detector. Finally he told me they are discontinued, so if I need new … Excerpt saved from the Arctic Shift Reddit archive on 2026-10-23. | Reddit comment · 2024-02 |
Each row is one report from a GitHub thread, an integration’s docs, or r/homeassistant. Check the date and the linked source before you buy.
In ReReHome
Once Home Assistant’s HomeKit Bridge shares it, this device reaches Apple Home as a HomeKit accessory behind your Home Assistant bridge, so ReReHome shows and controls it like any other.
Identifiers
| Brand | First Alert |
|---|---|
| Model | Onelink |
| Category | Sensors |
Also reported as
- First Alert OneLink smoke alarm