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Rugged door and window monitoring, built for the outdoors. The Shelly BLU Door/Window Outdoor ZB is an IP55 door and window sensor with tilt (inclination angle) detection and dual Zigbee 3.0 & Bluetooth 5 LE connectivity. With up to 5 years of battery life, it is built for gates, sheds and exterior entrances.
WHY SHELLY BLU DOOR/WINDOW OUTDOOR ZB?
More than open and closed
Beyond simple open/close detection, it tracks the tilt angle of doors, gates and windows, so you can monitor ventilation gaps and partial openings and build richer automations.
Zigbee and Bluetooth can operate simultaneously, so the Shelly BLU Door/Window Outdoor ZB fits into Shelly setups (via any Shelly Plus, Gen3, Gen4 or Pro device as a Bluetooth gateway) as well as Zigbee hubs and platforms like Home Assistant. It mounts in seconds with the included adhesive pads - no drilling required.
KEY FEATURES
Dual connectivity: Zigbee 3.0 and Bluetooth 5 LE
IP55 outdoor rating: rugged plastic shell for year-round outdoor use from -20°C to 40°C
Get notified when garden or driveway gates are opened, even in exposed outdoor locations.
Shed & Garage Security
Monitor outbuildings, sheds and garage side doors where indoor sensors would not survive.
Exterior Entrances
Track the status of patio, balcony and back doors and trigger security alerts when they open.
Ventilation Tracking
Use tilt detection to know if windows or skylights are left partially open.
Energy Saving
Pause heating or air conditioning automatically when an exterior door or window is left open.
Scene Automation
Turn on outdoor or entrance lights when a gate or door opens after dark.
Functionalities
Tilt & Angle Detection
Measures inclination angle to track ventilation positions and partial openings, not just open or closed.
Instant Status Broadcasting
Sends open/close and tilt updates over Zigbee or Bluetooth the moment a change is detected.
Beacon Mode
Broadcasts status periodically for setups that need regular state updates.
AES Encrypted Transmission
All wireless communication is AES-encrypted between the sensor and your gateway or hub.
Shelly Smart Control App
View status, monitor battery level and configure Beacon mode and pairing from the app.
Adhesive Mount Installation
Attaches with included foam pads - no screws or drilling on gates, sheds and exterior frames.
Frequently Asked Questions
Can the Shelly BLU Door/Window Outdoor ZB be installed outdoors?
Does it work with Zigbee and Bluetooth at the same time?
Do I need a gateway or hub?
What is tilt detection used for?
What battery does it use and how long does it last?
Why Zigbee?
Zigbee is one of the most widely adopted smart home communication standards.
Universal Compatibility
Works with a large ecosystem of Zigbee-compatible devices from multiple manufacturers.
Reliable Mesh Network
Devices help extend network coverage by forwarding signals, improving reliability and range.
Energy Efficient
Designed for low-power operation, making it ideal for battery-powered sensors.
Enhanced Security
Uses AES-128 encryption to help protect communications within your smart home network.
No hub required, Universally compatible
Shelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed. Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system.
No hub required, Universally compatible
Shelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed. Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system.
Specifications
DEVICE
Model
SBDW-302C
PHYSICAL
Sensor size (HxWxD)
41 x 28 x 9 mm / 1.62 x 1.10 x 0.35 in
Magnet size (HxWxD)
31 x 7 x 7 mm / 1.22 x 0.28 x 0.28 in
Weight
18 g / 0.64 oz
Shell material
Plastic
Ingress protection
IP55
Mounting
Adhesive pads (included)
ENVIRONMENTAL
Ambient working temperature
-20°C to 40°C / -5°F to 105°F
Humidity
30% to 70% RH
ELECTRICAL
Power supply
1 x 3 V CR2032 battery (included)
Estimated battery life
Up to 5 years
SENSORS
Open/close detection
Yes
Tilt (inclination angle)
Yes
RADIO
Bluetooth
5 (LE), 2402-2480 MHz, up to 10 m indoors / 30 m outdoors
Zigbee
802.15.4 (Zigbee 3.0), 2405-2480 MHz, up to 10 m indoors / 30 m outdoors
Max. RF power
< 8 dBm
Encryption
Yes (AES)
CPU / Flash
EFR32MG27 / 768 kB
COMPATIBILITY
Supported Shelly gateways
Shelly Plus / Gen3 / Gen4 and Pro series (Bluetooth), or any Zigbee 3.0 hub
Collapsible content
Warranty
New Products
USA Pro Market Manufacturer Warranty: Lifetime manufacturer warranty (only if installed by a professional within USA) when purchased at Digital Bay Tech.
Retail Standard Manufacturer Warranty (included in purchase price): 2, 3 or 5 years manufacturer warranty covers only the hardware (corpus, mechanics, and display, if any) and does not cover consumables (battery) and accessories insofar as these are subject to exhaustion (decrease of their useful life) depending on the intensity of their use. Device malfunctions are only covered when device is used as described conditions within user manual (max loads, proper installation, etc.). Please check refund policy for further details.
Gen 1: 2 years.
Plus, Gen3, Gen4, Wave: 3 years.
Pro Line: 5 years.
Special Notes
Do It Yourself: Devices are technically user-installable in many locales, nevertheless consulting a licensed electrician to install shelly components is recommended; in addition to being licensed to work with electrical devices, they are also familiar with local building codes and regulations to keep your safety.
Manufacturer's Safety note: Each Shelly device generates heat under load. Do not combine two or more Shelly devices stacked on top of or beside each other in a confined space. There must be a minimum distance of 0.4 inch / 1 cm between them to allow for airflow.