Eufy Motion Sensor vs Shelly Blu Motion

The Shelly Blu Motion wins overall, thanks to wider integrations (Google Home, Alexa and Home Assistant) and a built-in lux light sensor on top of motion. The Eufy Motion Sensor is the more affordable and better-rated option, but it is motion-only and limited to the eufy ecosystem plus Home Assistant.

Sensing and platforms. The Shelly Blu Motion adds an integrated light (lux) sensor and works with Google Home, Alexa and Home Assistant, while the Eufy Motion Sensor detects motion only and works solely within eufy plus Home Assistant.

On paper yes, both list a 9m/30ft range. In practice, eufy owners report the Eufy Motion Sensor falls short of that figure, and the Shelly Blu Motion is best kept indoors, so treat the rating as an indoor guideline for either unit.

The Shelly Blu Motion's built-in lux sensor lets you trigger lights only when it is dark, which the motion-only Eufy Motion Sensor cannot do. That makes the Shelly more flexible for lighting scenes, provided you have a Shelly bridge device in place.

Buy the Eufy Motion Sensor if you already own a eufy HomeBase and want the more affordable, better-rated sensor with a long rated battery life for eufy cameras and automations. It is not the pick if you want a light sensor or broad platform support.

Buy the Shelly Blu Motion if you run Shelly hardware or Home Assistant and want a tiny sensor with a built-in lux sensor plus Google Home, Alexa and Home Assistant support. Remember it needs another Shelly device or a BLU Gateway to bridge Bluetooth to WiFi.