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Sensors
Shelly BLU Door/Window Bluetooth door and window sensor, black
A wireless Bluetooth door and window sensor that detects whether a door or window is open or closed, the window’s opening angle and the light level.
- Status indicators and alerts in the app
- Works as an alarm sensor and as a trigger for smart home scenes
- Up to five years of battery life
- Requires a CR2032 battery (included)
- Smart door sensor, smart home, smart electrical systems
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SKU: 3800235266618Categories: Sensors
About the product
More information
Video tutorials
Adding a smart home sensor to the app
Creating a smart home scene
Official Shelly videos
How to create Automations in the Shelly App
Smart security in just 100 ms ⏰ - Shelly BLU Door/Window Sensor
Features
A black wireless Bluetooth sensor for doors and windows that detects open or closed status, the opening angle and the light level. It sends alerts to your phone and by email, making it ideal for an alarm system or for running scenes at home. Quick stick-on installation. The sensor works with any Shelly Plus or Pro series device (at least one such device must be nearby to connect to the app).
Up to 5 years of battery life
Requires a CR2032 battery (included)
Requires a nearby Shelly Plus or Pro series device to connect to the app
Response time under 100 ms
Compact size: 35 × 35 × 7 mm (sensor)
35 × 12 × 7 mm (magnet)
Works as an alarm sensor and as a trigger for smart home scenes
Smart door sensor, smart home, smart electrical systems
Who it’s for
A black door or window sensor that detects opening, closing and opening angle, with alerts to your phone. Ideal for a basic alarm and for scenes, such as turning on the entrance light or turning off the air conditioner when a window opens. For a white model that also supports Zigbee, see the BLU Door/Window ZB.
Before you install
- Works over Bluetooth: you need a Shelly Plus, Pro or Gen3/Gen4 device within about 10 meters, or the BLU Gateway.
- CR2032 battery included, lasting up to 5 years.
- Stick-on mounting, no screws needed.
FAQ
Can the sensor tell whether a window is fully open or just ajar?
Yes, it measures the opening angle.
How fast does the alert arrive?
The sensor responds in under a tenth of a second, and the alert reaches your phone within seconds.
Do I need a gateway?
Only if there’s no Shelly Plus, Pro or Gen3/Gen4 device in range at home.