Bosch
Bosch Smart Home Smoke Detector II
- Native integration
- Local control
- Zigbee
Prices verified October 2026
See more sensors picks on our Amazon storefront →Our verdict
The one smoke alarm in this group with a real, local Home Assistant route: the core Bosch Smart Home integration talks to the Smart Home Controller over your LAN (local push) and exposes the alarm state, plus an intrusion-alarm switch on the II. It is Zigbee, runs on a replaceable lithium cell (roughly 5 years per retailers, 85dB), and the alarms sound together. The catch is the Bosch controller: you pay for it and you are buying into Bosch's ecosystem, and the detector does not pair with a generic Zigbee dongle. HA can read it and sound or clear the intrusion alarm, but it must never be your only fire warning.
What can Home Assistant control on the Bosch Smart Home Smoke Detector II?
| Control | Type | What it does |
|---|---|---|
| Smoke detector | Event | Fires when the alarm state changes; use as an automation trigger, not a continuous reading. |
| Smoke detection system | Event | System-level state: idle, alarm or alarm muted. |
| Intrusion alarm | Switch (config) | Smoke Detector II only: sounds or clears its own alarm from HA. |
Home Assistant's bosch_shc integration is Local Push via the Smart Home Controller on the same network; you register HA with the controller by pressing its button and entering the system password. The Smoke Detector II adds an 'Intrusion alarm' configuration switch that can sound or clear its own alarm; smoke events arrive as event entities, not a continuously readable smoke level. Pairing the detector directly to Zigbee2MQTT/ZHA is not documented, so don't assume it.
Specs
| hub | Requires Bosch Smart Home Controller (I or II) for anything beyond basic stand-alone alarm |
|---|---|
| power | 3V CR17450 lithium cell, roughly 5 years per retailer listings |
| radio | Zigbee (per Currys/retailer listings) |
| sounder | 85 dB(A) at 3m per retailer listings |
How does the Bosch Smart Home Smoke Detector II compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Bosch Smart Home Smoke Detector II (this product) | £59.95 | Zigbee | Yes | Native |
| Aico Ei3016 (Mains Optical Smoke Alarm) | £53.89 | Wi-Fi | Cloud | HACS |
| Aqara Door and Window Sensor P2 | £23.99 | Matter, Thread | Yes | Works with HA |
| Aqara Motion Sensor P1 | £18.99 | Zigbee | Yes | Zigbee2MQTT / ZHA |
Frequently asked questions
- Does the Bosch Smart Home Smoke Detector II work with Home Assistant locally?
- Yes. The Bosch Smart Home Smoke Detector II is controlled locally in Home Assistant through a built-in Home Assistant core integration (bosch_shc), so it keeps working if your internet connection or the Bosch cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Bosch Smart Home Smoke Detector II use, and do I need a hub?
- The Bosch Smart Home Smoke Detector II uses Zigbee. To pair it with Home Assistant you need a Zigbee coordinator (for example a SkyConnect/ZBT-1 or Sonoff dongle) attached to your Home Assistant host. Bosch's own hub is not required when you integrate through a built-in Home Assistant core integration (bosch_shc).
- How much does the Bosch Smart Home Smoke Detector II cost in the UK?
- The lowest price we have listed for the Bosch Smart Home Smoke Detector II is £59.95 at Amazon UK. Prices were last checked in October 2026 and change often, so confirm on the retailer's page before buying.
Bosch
Bosch Smart Home Smoke Detector II
£59.95 at Amazon UK