17% OFF
$24.99
$29.99
Updated November 2026
Data from the official Eufy and Shelly sites.
2026 verdict
Between these two indoor motion sensors, the Shelly Blu Motion is the one to pick if you want lighting triggers that respond to darkness as well as movement.
It wins on integrations, reaching Google Home, Alexa and Home Assistant where the Eufy Motion Sensor stays inside eufy plus Home Assistant, and on sensing, adding a lux light sensor on top of motion, with a wider 120 degree field against 100 degrees and a 5 year battery rating against 2 years. The Eufy Motion Sensor is the cheaper, better rated unit, and it pairs and mounts in minutes through a eufy HomeBase. The catch for both is a bridge: the Shelly Blu Motion is Bluetooth LE and needs another Shelly device or a BLU Gateway, and the Eufy Motion Sensor will not work without a eufy HomeBase. Choose the Shelly Blu Motion for a Shelly or Home Assistant home that wants dark-only lighting; choose the Eufy Motion Sensor if you already own a eufy HomeBase.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
Connectivity
News by email
Still comparing? Get what's new by email
New releases and the smart home news worth knowing, in your inbox.
No spam. Unsubscribe in one click.
The biggest differences
Where these two are furthest apart, and by how much.
- Battery Life2.5×Shelly Blu Motion5 years vs 2 years
- Warranty2×Shelly Blu Motion2 years vs 1 year
- Angle of Detection+20%Shelly Blu Motion120° vs 100º
| Feature | Eufy Motion Sensor | Shelly Blu Motion | Winner |
|---|---|---|---|
| Rating | 4.5 | 4.0 | Eufy Motion Sensor |
| Warranty | 1 year | 2 years | Shelly Blu Motion |
| Battery Life | 2 years | 5 years | Shelly Blu Motion |
| Integrations | Home Assistant | Google Home, Alexa, Samsung SmartThings, Home Assistant | Shelly Blu Motion |
| Sensors | Motion | Motion, Light | Shelly Blu Motion |
| Angle of Detection | 100º | 120° | Shelly Blu Motion |
| Connectivity | 2.4 GHz WiFi | Bluetooth | Tie |
| Alerts | Motion Alerts | Motion Alerts | Tie |
| Range of Detection | 29.5 ft 9 m | 29.5 ft 9 m | Tie |
What the differences mean
Light sensing
The Shelly Blu Motion adds an integrated LUX sensor, so it can withhold a lighting trigger until the room is actually dark. The Eufy Motion Sensor detects motion only, with no light reading at all.
Platform reach
The Shelly Blu Motion works with Google Home, Alexa and Home Assistant, and reaches SmartThings through a Shelly gateway. The Eufy Motion Sensor stays inside the eufy ecosystem plus Home Assistant, with no Alexa, Google Home, Matter or HomeKit.
Battery life
The Shelly Blu Motion is rated up to 5 years on a CR2477 cell; the Eufy Motion Sensor is rated about 2 years. Both are low-maintenance once mounted, but the Shelly stretches the interval further.
Field of view
The Shelly Blu Motion covers 120 degrees and the Eufy Motion Sensor 100 degrees. Both list a 9 m rating, though eufy owners report the sensor falls short of that in practice.
What it takes to run
The Shelly Blu Motion is Bluetooth LE and needs another Shelly device or a BLU Gateway to reach Wi-Fi. The Eufy Motion Sensor talks to a eufy HomeBase over sub-1G. Neither works standalone.
Which one to buy if
- you already own a eufy HomeBase
The Eufy Motion Sensor pairs to it in minutes and is the cheaper of the pair.
- you run Shelly hardware or Home Assistant
The Shelly Blu Motion bridges through a Shelly device or BLU Gateway and auto-detects in Home Assistant via BTHome.
- you want lights to come on only when the room is dark
Only the Shelly Blu Motion has a lux sensor for dark-only triggers.
- you need Alexa or Google Home routines
The Shelly Blu Motion supports both; the Eufy Motion Sensor supports neither.
- you want the smallest sensor with the longest battery
At 26g and rated up to 5 years, the Shelly Blu Motion outlasts and outsizes the Eufy Motion Sensor.
17% OFF
$24.99
$29.99
- + Rating: 4.5
- - Warranty: 1 year vs 2 years
- - Battery Life: 2 years vs 5 years
Winner
- + Warranty: 2 years
- + Battery Life: 5 years
- + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- - Rating: 4.0 vs 4.5
What owners say
Owners of both sensors lead with how easy they are to mount and how quickly they respond once a bridge is in place. Eufy Motion Sensor owners single out the long battery life, one reporting two years outdoors on the original cells, and the adjustable sensitivity paired with instant phone alerts; their warnings are a real detection range shorter than the 30 ft on the box and the lack of a siren in the sensor itself. Shelly Blu Motion owners talk about a sensor that is almost invisible on the wall, responds in under a second, and carries a lux reading for dark-only automations; their complaints are the need for another Shelly to bridge it and weak outdoor behavior.
Frequently Asked Questions
Which is better overall: Eufy Motion Sensor or Shelly Blu Motion?
The Shelly Blu Motion wins overall, with Google Home, Alexa and Home Assistant support plus a built-in lux sensor for dark-only lighting. The Eufy Motion Sensor is the cheaper and better rated option, but it is motion only and limited to the eufy ecosystem plus Home Assistant.
What is the biggest difference between the Eufy Motion Sensor and the Shelly Blu Motion?
Sensing and platforms. The Shelly Blu Motion adds an integrated light sensor and works with Google Home, Alexa and Home Assistant, while the Eufy Motion Sensor detects motion only and works within eufy plus Home Assistant.
Do the Eufy Motion Sensor and the Shelly Blu Motion have the same detection range?
Both list 9 m on paper. In practice eufy owners report the Eufy Motion Sensor falls short of that figure, and the Shelly Blu Motion is an indoor sensor with a 120 degree field against 100 degrees. Treat the rating as an indoor guideline for either unit.
What extra automations does the light sensor enable?
The Shelly Blu Motion's 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 in place.
Who should buy the Eufy Motion Sensor?
Buy it if you already own a eufy HomeBase and want the more affordable, better reviewed sensor with long rated battery life for eufy cameras and automations. It is not the pick if you want a light sensor or broad platform support.
Who should buy the Shelly Blu Motion?
Buy it if you run Shelly hardware or Home Assistant and want a tiny sensor with a lux sensor plus Google Home and Alexa support. Remember it needs another Shelly device or a BLU Gateway to bridge Bluetooth to Wi-Fi.
Spotted something wrong on this page? Tell us and we will fix it.
Our store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on AmazonFull comparison table
Compare all 28 Motion Sensors side by side
You are looking at two of them. The full table lines up all Motion Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 28 Motion Sensors
- 34 specs compared
- 31 filters
- Motion Sensors
Alarm Motion Detector
- Motion Sensors
Hue Motion Sensor
- Motion Sensors
Motion Sensor
- Motion Sensors
Hue Outdoor Sensor
- Motion Sensors
BLU Motion ZB
- Motion Sensors
Indoor Motion Sensor RT
- Motion Sensors
LoRa 1/4 Mile Motion Sensor
- Motion Sensors
Motion Detector (3rd Gen)
- Motion Sensors
SNZB-03P ZigBee Motion Sensor
- Motion Sensors
Motion Sensor P1
- Motion Sensors
Solar Outdoor Spotlight - Motion-Sensor
- Motion Sensors
Smart Wireless Motion Sensor
- Motion Sensors
All-in-One Sensor
- Motion Sensors
Motion Sensor
- Motion Sensors
Motion
- Motion Sensors
SenseGuard Motion Gen2
- Motion Sensors
MultiSensor 7
- Motion Sensors
TriSensor 8
- Motion Sensors
SNZB-03 ZigBee Motion Sensor
- Motion Sensors
GoveeLife Outdoor Motion Sensor
- Cameras
4G Camera S230
- Cameras
4G LTE Cam S330
- Cameras
Cam S3 Pro
- Cameras
Cam S330
- Cameras
Cam S4
- Cameras
eufyCam C35
- Cameras
eufyCam C37
- Cameras
Indoor Cam C120
- Cameras
Indoor Cam E220
- Cameras
Indoor Cam E30
- Cameras
Indoor Cam S350
- Cameras
Outdoor Cam E210
- Cameras
Outdoor Cam E220
- Cameras
PoE Bullet-PTZ Cam E50
- Cameras
SoloCam E30
- Cameras
SoloCam E42
- Cameras
SoloCam E50 (S340 Next-Gen)
- Cameras
SoloCam S220
- Cameras
SoloCam S230
- Cameras
SoloCam S340
- Buttons
BLU Button Tough 1 ZB
- Buttons
BLU RC Button 4 ZB
- Cameras
Camera
- Displays
Wall Display X1i
- Displays
Wall Display XL
- Displays
Wall Display
- Door & Window Sensors
BLU Door/Window Outdoor ZB
- Door & Window Sensors
BLU Door/Window ZB
- Energy Monitors
3EM-63W Gen3
- Energy Monitors
EM Gen3
- Energy Monitors
EM Gen4
- Energy Monitors
EM Mini Gen4
- Energy Monitors
Pro 3EM 3CT63
- Energy Monitors
Pro 3EM-400
- Energy Monitors
Pro 3EM v2
- Energy Monitors
Pro EM-50
- Gas Detectors
GAS (CNG)
- Gas Detectors
GAS (LPG)
- LED Bulbs
Multicolor Bulb E27 Gen3
- Motion Sensors
BLU Motion ZB