Shelly Plus Smoke Alarm uses photoelectric sensing technology, which is highly effective at detecting smouldering fires that may burn for hours before bursting into flames. It is wire‑free, easy to install, and powered by a long‑lasting battery with up to 5 years of life.
When smoke is detected, the device initiates a loud sound alarm (>85 dB) and a visual light alert, while simultaneously sending notifications to your phone. It integrates with Alexa, Google Home, Home Assistant, and supports advanced protocols such as MQTT, Webhooks, HTTPS, and UDP.
Key Features
- Photoelectric smoke detection – effective for smouldering fires.
- Wi‑Fi & Bluetooth connectivity – no hub required.
- Instant alerts – notifications via app and automation triggers.
- Sound & light alarms – >85 dB siren plus LED indicator.
- Battery powered – up to 5 years of battery life.
- Wire‑free installation – easy mounting with no angle limitations.
- Integration – works with Shelly Smart Control App, Alexa, Google Home, Home Assistant.
Technical Specifications
- Model: Shelly Plus Smoke Alarm
- Sensor Type: Photoelectric smoke detector
- Connectivity: Wi‑Fi 2.4 GHz, Bluetooth
- Battery: Long‑life lithium battery
- Battery Life: Up to 5 years
- Alarm Output: >85 dB sound + LED light
- Dimensions: Compact, circular design (~ diameter 70–80 mm)
- Control Options: Shelly Smart Control App, Alexa, Google Home, Home Assistant
- Mounting: Wire‑free, adhesive or screw mount
- Weight: ~100 g
- Warranty: 3 years (hardware/firmware)
- Colour: White housing with LED indicator








Reviews
There are no reviews yet.