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Last updated October 2026

Shelly BLU TRV

Accurate, quiet temperature regulation through Google Home, Alexa or SmartThings, as long as the Shelly BLU Gateway stays powered and well placed.

4.1
124 ratings
$64.99

Last recorded price

As an Amazon Associate I earn from qualifying purchases
Launch Year: 2024

Model: SBTR-001AEU

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Our review

Shelly BLU TRV Review: Quiet, Precise Heating Control Through a Bluetooth Gateway

The verdict

The Shelly BLU TRV is a Bluetooth radiator valve that relies on a Shelly BLU Gateway for Wi-Fi connectivity, and it shines for buyers building multi-room heating automations around Google Home, Alexa or Samsung SmartThings. Most owners describe installation as quick, temperature regulation as quiet and accurate, and multi-valve setups as reliable once the gateway is placed well, though a vocal minority report Alexa responsiveness issues, occasional Bluetooth range problems, or a built-in temperature reading skewed by the radiator's own heat unless paired with an external sensor. It is a strong option for buyers wanting precise, quiet heating control, less ideal for anyone needing Apple HomeKit or a valve that never depends on a separate gateway staying powered.

Best for
  • Multi-room heating automation
  • Google Home, Alexa or SmartThings households
  • Buyers wanting quiet, precise valve regulation
  • Households already using a Shelly BLU Gateway

Pros

  • Quiet, accurate temperature regulation
  • Quick installation with multiple radiator adapters included
  • Supports pairing with an external Shelly BLU H&T sensor for better accuracy
  • Works with Google Home, Alexa, and Samsung SmartThings
  • 2 year battery life and 2 year warranty

Cons

  • Requires the Shelly BLU Gateway to stay powered at all times
  • Some users report inconsistent Alexa responsiveness
  • Bluetooth range can be an issue depending on gateway placement
  • Built-in sensor reading can be skewed by radiator heat without an external sensor
  • No Apple HomeKit, IFTTT, or Matter support
  • No frost protection, child lock, or geofencing

Who is the Shelly BLU TRV for?

This valve suits buyers automating heating across several rooms who want fine-grained control through Google Home, Alexa or Samsung SmartThings, rather than Apple HomeKit, which it does not support. Because it uses Bluetooth back to a Shelly BLU Gateway for Wi-Fi connectivity instead of Zigbee or Thread, it is a good fit for households already invested in the Shelly ecosystem or moving away from Zigbee valves that struggled with hub range.

What buyers love

Reviewers consistently describe installation as quick, with multiple radiator adapters included in the box, and pairing with the BLU Gateway as painless. The valve's temperature regulation is repeatedly praised as accurate and notably quiet compared to other smart TRVs, and several owners run multiple units controlled by voice or automations through Shelly's own app with fast, reliable response. Buyers who previously had wireless valves losing contact with their hub mention the Bluetooth gateway approach as a solid, more stable alternative for spread-out homes.

What to know before you buy

The clearest caveat, confirmed directly by the product's own external temperature sensor feature, is that the valve's built-in reading can be skewed by heat radiating from the radiator itself, so buyers wanting the most accurate room temperature are encouraged to pair it with a separate Shelly BLU H&T sensor rather than relying on the valve alone. The Shelly BLU Gateway must stay powered and connected at all times for remote and voice control to work, and a subset of reviewers report inconsistent Alexa responsiveness or occasional Bluetooth range issues depending on gateway placement. The valve has no Apple HomeKit, IFTTT, or Matter support, and lacks frost protection, child lock, and geofencing.

Is the Shelly BLU TRV worth it?

For buyers who prioritize quiet, accurate valve regulation and are already in the Google Home, Alexa or SmartThings ecosystem, the Shelly BLU TRV delivers a dependable heating automation experience once the gateway is placed thoughtfully. Buyers relying heavily on Alexa voice control or wanting Apple HomeKit compatibility should weigh the reported responsiveness complaints, but for its core use case, precise per-room heating control tied into a Shelly BLU Gateway setup, it is a solid, well-built choice.

Frequently asked questions

Does the Shelly BLU TRV need a gateway?

Yes, it connects via Bluetooth to a Shelly BLU Gateway, which must stay powered and connected for Wi-Fi based remote control and voice assistant commands to work.

Does it work with Apple HomeKit?

No, it does not support Apple HomeKit, IFTTT, or Matter. It supports Google Home, Alexa, and Samsung SmartThings.

Is the temperature reading accurate?

The built-in sensor can be skewed by heat coming directly off the radiator. For more accurate room temperature, it supports pairing with an external Shelly BLU H&T sensor.

How long does the battery last?

It runs on 2x AA batteries with a rated battery life of about 2 years, and it comes with a 2 year warranty.

Does it have frost protection or child lock?

No, this model does not include frost protection, child lock, or geofencing features.

At a glance

Summary

Everything this radiator valve supports, grouped by category.

Size & Materials
3.1 × Ø2.1 in 78 × Ø54 mm3.8 oz 107 g
Connectivity
2.4 GHz WiFi (Gateway required)Bluetooth
Integrations
Google HomeAlexaSamsung SmartThingsHome Assistant
Sensors
Temperature
Scheduling
Manually
Features
External Temperature SensorsDisplay Temperature

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Company
Shelly logo

Shelly

4.4/ 5 avg ratingBulgaria flagHeadquartered in Bulgaria

Shelly, based in Bulgaria, makes compact smart relays, switches, plugs and sensors that fit behind existing wall switches and outlets to automate almost any home wiring. Its devices are popular with advanced users for offering local control, a built-in web interface, MQTT and broad integration with Home Assistant, Alexa and Google Home. Shelly is a favorite for retrofitting smart control without replacing fixtures.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials
Dimensions

3.1 × Ø2.1 in 78 × Ø54 mm

Weight

3.8 oz 107 g

Power
Battery Type

2x AA

Battery Life

2 years

Connectivity
2.4 GHz WiFi

Gateway required

5 GHz WiFi

NO

Bluetooth

YES

Z-Wave

NO

Zigbee

NO

Thread Protocol

NO

Integrations
Google Home

YES

Alexa

YES

Apple HomeKit

NO

Samsung SmartThings

YES

Home Assistant

YES

Matter

NO

Display
Screen

YES

Screen Type

?

Sensors
Temperature

YES

Humidity

NO

Scheduling
Manually

YES

Automatically

NO

Suggestions

NO

Features
External Temperature Sensors

YES

External sensor support (compatible with Shelly BLU H&T, Shelly BLU Door/Window sensors, associated via BLU Gateway Gen3)

Geofencing

NO

Frost Protection

NO

Child Lock

NO

Display Temperature

YES

Automations

?

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