Shelly BLU TRV V2 – Radiator thermostatic valve, Bluetooth, Zigbee, white (SBTR-001AEU)

The Shelly BLU TRV V2 is a battery-powered thermostatic radiator valve head supporting Bluetooth 5 LE and Zigbee 3.0 communication for room-by-room heating control. With its built-in temperature sensor, rotatable display and motorised valve control, it regulates the amount of heating water flowing through the radiator. It is powered by two AA batteries, with a manufacturer-specified battery life of up to 2 years.

The device supports two control modes: in temperature-based TRV mode, it automatically adjusts the valve position to maintain the desired room temperature, while in manual valve control mode the valve opening can be set as a percentage. The adaptive control algorithm adjusts valve operation to the thermal behaviour of the room, while Boost mode fully opens the valve for faster heating.

The BLU TRV V2 can use Bluetooth and Zigbee communication simultaneously and supports BTHome. In the Shelly Smart Control system, it can be controlled through the Bluetooth Gateway function of a compatible Shelly Wi-Fi device or through a Shelly BLU Gateway Gen3. In Zigbee mode, it can also be paired directly with a compatible Zigbee coordinator. It can be installed directly on M30 × 1.5 mm radiator valves without an adapter, while other valve types can be used with a separate adapter kit.

About Shelly

Shelly manufactures smart home devices, in-wall and DIN rail-mounted relay modules, energy meters, dimmers, smart plugs, sensors, wall controllers and other building automation devices.

Depending on the model, Shelly products use Wi-Fi, Bluetooth, Zigbee, Matter and Z-Wave communication. In addition to the Shelly Smart Control system, many devices can also be integrated with Home Assistant, MQTT, KNXnet/IP and other local or cloud-based systems.

Key product features

• Automatic radiator valve control: Motorised control adjusts the radiator valve opening according to the configured room temperature.
• 2 × AA battery operation: Powered by two 1.5 V AA batteries, which are included in the package.
• Precise temperature control: The manufacturer specifies a control accuracy of ±0.1 °C.
• Adaptive valve control: The control algorithm adjusts valve operation to the temperature behaviour of the room.
• Quiet valve operation: A dedicated quiet operating mode reduces motor noise.
• Boost mode: Fully opens the radiator valve for faster room heating.
• Built-in temperature sensor: Can regulate temperature independently without an external sensor.
• External sensor support: Can be used together with Shelly BLU and BLU ZB temperature sensors and door/window sensors.
• Two control modes: Temperature-based automatic TRV mode and manual percentage-based valve control are available.
• Bluetooth and Zigbee: Supports Bluetooth 5 LE, Zigbee 3.0, the BTHome protocol, and simultaneous Zigbee and Bluetooth operation.
• Wi-Fi access through a gateway: Can be connected to Shelly Smart Control through the Bluetooth Gateway function of a compatible Shelly Wi-Fi device or through a Shelly BLU Gateway Gen3.

Smart home protocols and platform compatibility

• Bluetooth 5 LE: Built-in Bluetooth Low Energy communication.
• BTHome: Supported for Bluetooth-based smart home integrations.
• Zigbee 3.0: IEEE 802.15.4-based Zigbee communication for use with a compatible Zigbee coordinator.
• Multiprotocol operation: Zigbee and Bluetooth communication can be active simultaneously.
• Shelly Smart Control: Supported through a compatible Shelly Bluetooth gateway.
• Shelly BLU Gateway Gen3: Provides both local and cloud-based control for the BLU TRV.
• Shelly Wi-Fi Bluetooth Gateway: A compatible Shelly Gen2, Gen3 or Gen4 Wi-Fi device can be used as a Bluetooth gateway. For cloud-based BLU TRV control, the Shelly device used as a gateway must run firmware version 2.2.0 or newer.
• Home Assistant: Supported. The official Shelly integration in Home Assistant can manage the BLU TRV through a Shelly BLU Gateway Gen3 or another Shelly device with appropriate BLU TRV support.
• Homey: Supported over Zigbee through the Shelly Control app.

Smart features

• Remote temperature setting: The desired room temperature can be adjusted remotely from the Shelly Smart Control system.
• Local temperature setting: Each step of the rotary control ring changes the target temperature by 0.1 °C.
• Automatic TRV mode: The motor automatically regulates valve opening according to the configured target temperature.
• Manual valve control: The valve position can also be controlled directly as a percentage.
• Adaptive valve control: The control algorithm adjusts valve behaviour to temperature changes in the room.
• Boost mode: Fully opens the valve for faster room heating. It can be activated locally from the rotary control and remotely.
• Quiet operating mode: The motor can operate with reduced noise.
• Schedules: Heating schedules can be created in the Shelly Smart Control app.
• Scenes: Automations can be created together with other Shelly devices and sensors.
• External temperature sensor: Data from a compatible Shelly BLU H&T sensor can be used to compensate for temperature measurements near the radiator.
• External Temperature Control: When enabled, the TRV can use only the value from the external temperature sensor as the control reference.
• Door/window sensor integration: Data from Shelly BLU and BLU ZB door/window sensors can be used in heating automations.
• Battery status: Battery level can be checked both on the device display and in the Shelly system.
• OTA update: Firmware can be updated wirelessly.

Local control and display

• Display: 3-digit, 7-segment LED display.
• Rotatable display: The display orientation can be adjusted to suit the installation position.
• Rotary control: The target temperature can be adjusted locally and Boost mode can be activated.
• Calibration indication: The display indicates the progress and result of valve calibration.
• Battery level indication: Displays battery status in four charge ranges and provides a separate low-battery warning.
• Bluetooth pairing: Can be started from the physical button or the local menu.
• Zigbee pairing: Can be started by pressing the physical button three times or from the local menu.
• Find and Bind: Can be started by pressing the physical button five times.

Power supply

• Power supply: 2 × 1.5 V AA batteries.
• Batteries: The two AA batteries are included in the package.
• Battery life: Up to 2 years according to the manufacturer, depending on usage and environmental conditions.

Radiator valve compatibility

• Direct mounting: Can be installed directly on M30 × 1.5 mm threaded radiator valves without an adapter.
• With Shelly adapter: Can be used with Danfoss RA, RAV, RAVL, Caleffi, Giacomini and several M28 × 1.5 mm valves using a separately available adapter.
• M28 × 1.5 compatibility: Supported valves include Sam, Slovarm, Comap, Markardys, TA, Herz, MMA, Remagg and Pont a Mousson when used with a suitable adapter.
• Additional valves: Other valve types can also be used with suitable third-party adapters.
• Automatic calibration: After installation on the radiator valve, the device calibrates the motor movement range.

Technical specifications

• Product name: Shelly BLU TRV V2
• Model: SBTR-001AEU
• Bluetooth identifier: 0x0008
• Product type: Motorised thermostatic radiator valve head
• Built-in sensor: Temperature sensor
• Temperature control: Manufacturer-specified accuracy of ±0.1 °C
• Control modes: Automatic temperature control and manual percentage-based valve control
• Bluetooth: Bluetooth 5 LE
• Bluetooth frequency range: 2402–2480 MHz
• Maximum Bluetooth RF power: <8 dBm
• Bluetooth range: Up to 10 m indoors and 30 m outdoors, depending on environmental conditions
• Zigbee: IEEE 802.15.4 / Zigbee 3.0
• Zigbee frequency range: 2405–2480 MHz
• Maximum Zigbee RF power: <8 dBm
• Zigbee range: Up to 10 m indoors and 30 m outdoors, depending on environmental conditions
• BTHome: Supported
• Mounting: M30 × 1.5 mm
• Mounting ring material: Nickel-plated brass
• Housing material: Plastic
• Colour: White
• Dimensions: 78 × Ø54 mm
• Power supply: 2 × AA, 1.5 V
• Estimated battery life: Up to 2 years
• Operating temperature: -20–60 °C
• Operating humidity: 25–80% RH
• Pollution degree: 2
• Schedules: Supported

Additional features

• V2 communication: Bluetooth 5 LE and Zigbee 3.0 can be used simultaneously, with BTHome support.
• V2 motor: The revised motor allows quieter valve operation.
• Operation without a gateway: Thanks to the built-in temperature sensor and local control, basic thermostat functions continue to work without a network connection.
• Wi-Fi connection: The TRV does not connect directly to Wi-Fi; for remote access through Shelly Smart Control, a compatible Bluetooth gateway forwards communication to the network.
• Shelly BLU Gateway Gen3: The gateway is sold separately.