Device identification
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Device name: Shelly BLU TRV
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Device model: SBTR-001AEU
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Device Bluetooth ID: 0x0008
Short description
Shelly BLU TRV is a smart thermostatic radiator head designed to make room-by-room heating more comfortable and efficient. It regulates your radiator valve automatically, so you get stable temperatures without constant manual adjustments.
Use it to automate daily heating routines, quickly warm up a room when needed, and keep comfort consistent even as conditions change. It can operate autonomously with its built-in temperature sensor and can also work with external Shelly BLU ZB temperature and door/window sensors for smarter decisions.
Shelly BLU TRV connects over Bluetooth 5 LE and Zigbee 3.0, and it supports BTHome with simultaneous Zigbee and Bluetooth operation. For Zigbee control, pair it to your coordinator, and for Wi‑Fi control in the Shelly app, use a BLU Gateway Gen3 (that also enables local control) or via any Shelly Wi‑Fi device that can act as a Bluetooth Gateway.
Advanced Setup and Installation
Main features
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Smart thermostatic radiator head for automated radiator valve control
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Powered by 2 × 1.5 V AA batteries (included)
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Precise temperature control with ±0.1°C accuracy
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Adaptive valve control algorithm that adjusts to your room for efficient heating management
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Silent valve movement option to reduce operational noise
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Boost mode to quickly warm up a room when you need it
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Built-in temperature sensor for autonomous operation
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External sensor support with Shelly BLU ZB series temperature and door/window sensors
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Two operating modes: temperature-based TRV control and manual valve control (%)
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Bluetooth 5 LE and Zigbee 3.0 connectivity with BTHome support and simultaneous Zigbee + Bluetooth operation
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Wi-Fi control via any Shelly Wi-Fi device with Bluetooth Gateway functionality through the Shelly App, or via Shelly BLU Gateway Gen3 for local control.
Use cases
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Remote temperature control: Make sure that your home is warm upon arrival and save energy by not heating the home unnecessarily when it is not occupied.
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Smart scheduling for energy efficiency: Set up smart schedules in the cloud application to optimize your heating schedule and save on energy costs.
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Boost mode for rapid heating: Activate Boost mode locally via the rotary encoder, or remotely through the cloud. This mode fully opens the valve to rapidly reach a comfortable temperature.
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Room-by-room temperature control: Manage the temperature independently for each room. Achieve personalized comfort and improved energy efficiency by heating rooms according to their specific use.
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Adaptive learning for personalized heating: Adjust your heating system for optimal comfort and safety using data from external sensors, such as Shelly BLU H&T and Shelly BLU Door/Window.
Connectivity
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Bluetooth
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Zigbee
User interface
Inputs
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User (reset) button
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Press once to activate Bluetooth pairing mode
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Press 3 times to activate Zigbee network association
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Press 5 times to activate Find and Bind
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Press and hold for 30 seconds to factory reset the Device
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Rotating knob
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Turn at least 1 step clockwise (CW) or counterclockwise (CCW) to activate the LEDs.
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Turn the knob in quick short movements for less tan 10 steps CCW > CW > CCW> CW (start in either direction) to access the TRV user menu. The menu starts with a battery level indication
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Turn 4 steps CW to activate the Bluetooth pairing mode (active 30 seconds)
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Turn 5 steps CW to activate Zigbee network association (active 30 seconds)
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Turn 1 step CW to increase temperature with 0.1 °C
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Turn 1 step CCW to decrease temperature with 0.1 °C
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Turn the knob quickly for more than 10 steps CW to turn on Boost mode
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Turn the knob quickly for more than 10 steps CCW to turn off Boost mode
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Outputs
3-digit, 7-segment LED display:
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Mounting
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Calibration
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Temperature setting
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Boost mode
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Battery level
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Pairing & Association
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User menu
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Updates
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Errors
Supported valves
Without adapter
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M30 x 1.5
With supplied adapter
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Danfos
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RA
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RAV
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RAVL
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Caleffi
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Giacomini
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M28 x 1.5
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Sam
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Slovarm
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Comap
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Markardys
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TA
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Herz
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MMA
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Remagg
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Pont a Mousson
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With third-party adapter
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Gampper (27 mm thread and inner thread M22)
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Glacomini
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Ista
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Meges (M38 x 1.5)
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Ondal (M38 x 1.5)
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Oventrop (M30 x 1.0 with 4 prongs)
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Rossweiner (M33 x 2.0)
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Vallant (30.5 mm)
View the full list of valves and their compatibility:
Simplified internal schematics
Specifications
| Quantity | Value |
|---|---|
| Physical | |
| Size (HxD): | 78 x Ø54 mm / 3.07xØ2.13 in |
| Weight: | 107 g / 3.77 oz |
| Mounting: | M30 / 15 |
| Mounting ring material: | Nickel-plated brass |
| Shell material: | Plastic |
| Shell color: | White |
| Environmental | |
| Ambient working temperature: | -20°С to +60°С / -4°F to 140°F |
| Humidity: | 25% to 80% RH |
| Pollution degree: | 2 |
| Electrical | |
| Power supply: | 2x AA, 1.5 V (included) |
| Estimated battery life: | up to 2 years |
| Sensors, meters | |
| Temperature sensor: | Yes |
| Radio | |
| Bluetooth | |
| Protocol: | 5 (LE) |
| RF band: | 2402 - 2480 MHz |
| Max. RF power: | < 8 dBm |
| Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (depends on local conditions) |
| Zigbee | |
| Protocol: | 802.15.4 |
| RF bands: | 2405 to 2480 MHz |
| Max. RF power: | < 8 dBm |
| Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (depends on local conditions) |
| Firmware capabilities | |
| Schedules: | Yes |
Compatible Bluetooth gateways for Shelly BLU TRV
Devices used for Cloud control must be running firmware version 2.2.0 or later.
FAQ
Troubleshooting
| Problem | Possible cause | Solution |
|---|---|---|
| The Shelly BLU TRV has lost its connection to the Zigbee coordinator. | The device has likely been unable to reach the Zigbee coordinator for an extended period. When the network connection is lost, the BLU TRV automatically tries to reconnect following this schedule:
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| The Shelly BLU TRV displays significantly incorrect temperature readings compared to the actual room temperature. | The Shelly BLU TRV expects data from an external temperature sensor and doesn't revert to its default measurement. | Run the external temperature command without parameters: |
| Shelly BLU TRV is unresponsive during the firmware update. | The update does not complete successfully, causing the Device to enter Bootloader mode. | Perform a manual update using the Shelly Debug BLE Devices application: We recommend using an Android smartphone for best results. We recommend using new batteries for the update. Before you begin, remove the Device from your smartphone’s Bluetooth settings by selecting Forget.
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| The Device is paired to an external sensor. The Device shows a temperature above the target, but the valve remains open. |
| This behavior is normal. Enable Underfloor Heating mode if you prefer the Device to rely exclusively on data from the external sensor, ignoring the built-in sensor. |
| This behavior is normal and is part of the normal operation of the algorithm. | |
| Ensure proper water flow in the radiator by bleeding it. | |
| Move the gateway closer to the Device to improve communication. | |
| The temperature increases when the algorithm is changed via the power_save flag. | Applicable for FW version ≥1.2.0 The BLU TRV adjusts its current temperature reading based on radiator heat. Changing the algorithm or updating the firmware might reset these adjustments. The Device needs time to recalculate. | The BLU TRV will automatically adapt and gradually adjust its temperature readings. |
| The Device cannot fully close the valve even when the temperature is set to the minimum. The issue persists after successful calibration. | The plunger is a bit shorter than required to close your valve. | Attach a small metal disk, (approx. the size of a 1 Euro cent coin), to the black plunger tip to extend its travel. |
| The Device cannot take readings from an external temperature sensor to set the target temperature. | Underfloor Heating feature not enabled through the Shelly Smart Control app or the web interface of the Gateway Gen3. Temperature sensing behavior with an external BLU H&T sensor paired with the TRV
| Enable the Underfloor Heating feature:
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| The Device’s valve appears to be open, even though it is set to | The | If you want to close the valve, decrease the target temperature by turning the knob CCW for less than 10 steps. |
| Calibration fails and the display shows | Insufficient output voltage or current from the batteries. | Change the batteries. Calibration starts automatically upon mounting the TRV head on the back plate. |
| *CW - clockwise In case you did not find solution to your problem, join our https://www.facebook.com/groups/Shelly-support-group-(English-Version)-1686781668087857/?locale=it_IT&_rdr or contact us at support@shelly.cloud. | ||
Shelly Smart Control
Components and APIs
Compliance
