| Feature | Aqara Smart Smoke Detector | Shelly Plus Smoke Alarm | Winner |
|---|---|---|---|
| Price | €37.99 | €39.95 | Aqara Smart Smoke Detector |
| Rating | 4.3 | 4.4 | Shelly Plus Smoke Alarm |
| Warranty | 1 year | 3 years | Shelly Plus Smoke Alarm |
| Battery Life | 10 years | 5 years | Aqara Smart Smoke Detector |
| Connectivity | Zigbee | 2.4 GHz WiFi, Bluetooth | Shelly Plus Smoke Alarm |
| Alerts | Fire Alerts | Fire Alerts, Low Battery Alerts | Shelly Plus Smoke Alarm |
| Integrations | Apple HomeKit, Home Assistant, IFTTT, Matter | Google Home, Alexa, Samsung SmartThings, Home Assistant | Tie |
| Screen | NO | NO | Tie |
| Sensors | Smoke | Smoke | Tie |
| Built-in Siren | YES | YES | Tie |
| Built-in Light | YES | YES | Tie |
| Tests Itself | NO | NO | Tie |
- + Price: €37.99
- + Battery Life: 10 years
- - Rating: 4.3 vs 4.4
- - Warranty: 1 year vs 3 years
- + Rating: 4.4
- + Warranty: 3 years
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- - Price: €39.95 vs €37.99
- - Battery Life: 5 years vs 10 years
Frequently Asked Questions
Which is better overall: Aqara Smart Smoke Detector or Shelly Plus Smoke Alarm?
The Shelly Plus Smoke Alarm is better overall thanks to its hub-free Wi-Fi setup, broader connectivity and alert options, and a longer 3-year warranty. The Aqara Smart Smoke Detector counters as the more affordable unit with a longer 10-year battery rating and Apple HomeKit and Matter support, so both have real strengths.
What is the biggest difference between the Aqara Smart Smoke Detector and the Shelly Plus Smoke Alarm?
Connectivity is the biggest difference. The Shelly Plus Smoke Alarm connects directly over Wi-Fi with no hub and works with Google Home, Alexa, SmartThings and Home Assistant, while the Aqara Smart Smoke Detector needs a Zigbee hub but adds Apple HomeKit, IFTTT and Matter support.
Does either alarm detect carbon monoxide?
No. Both the Aqara Smart Smoke Detector and the Shelly Plus Smoke Alarm are smoke-only devices with fire alerts and no carbon monoxide sensor. Buyers who need combined smoke and CO protection should look at a dual-sensor model instead.
How do battery life and warranty compare?
The Aqara Smart Smoke Detector is rated for a 10-year battery on its CR17450 cell, longer than the Shelly Plus Smoke Alarm's 5-year rating. However, the Shelly Plus Smoke Alarm carries a longer 3-year warranty against the Aqara's 1-year term, so each wins one of these measures.
Who should buy the Shelly Plus Smoke Alarm?
Buy the Shelly Plus Smoke Alarm if you want hub-free Wi-Fi setup, run Home Assistant, MQTT, Google Home, Alexa or SmartThings, and value the wider connectivity and longer 3-year warranty for automation-driven smoke alerts.
Who should buy the Aqara Smart Smoke Detector?
Buy the Aqara Smart Smoke Detector if you want the more affordable option with a longer 10-year battery rating, already run a Zigbee, Apple HomeKit or Matter setup, and prefer those integrations over the Shelly's Wi-Fi and Alexa focus.
