Bosch Smart Home - Matter Radiator valve thermostat II BTH-RAD

Bosch Smart Home Radiator Thermostat II [+M] – Matter-Compatible Heating Control

The Bosch BTH-RAD smart radiator thermostat lets you heat each room precisely, efficiently, and flexibly. Thanks to Thread + Matter support, it's compatible with Apple Home, Google Home, Amazon Alexa, and the Bosch Smart Home system. Ideal for any connected home, it enables intuitive control via app, voice, or device, and offers powerful automation to reduce energy use without sacrificing comfort.

Key Features

• Matter via Thread support: use it within any compatible smart home system
• Flexible heating: set exact temperature (±0.5°C) per room
• Energy-saving automations: programs, “Sustainable Ventilation,” window detection
• App, voice, or manual control: via Alexa, Siri, Google Assistant or Bosch app
• Group control: synchronize multiple thermostats in one room
• Child lock: block manual control via app or device
• Visual feedback: multicolour LED ring shows status and actions
• Installation: quick setup with M30 × 1.5 mm thread and Danfoss adapters included
• Silent & compact: only 87 × 51 × 51 mm and operates under 30 dB

Energy Efficiency & Protection

• Window detection: heating pauses when a window is open
• Temperature drop detection: triggers alerts or heating pause
• Frost protection: automatic heating at low temperatures
• Anti-scale protection: valve activation once per week outside heating season
• Battery alert: low battery warning weeks in advance
• Breakdown alert: create automations like “IF temp < 15°C THEN send alert”

Flexible Control Options

• Voice: “Alexa, set the living room to 22 degrees.”
• App: from home or remotely
• Manual: via buttons and dial on the device
• Scenarios: combine with other smart devices
• Schedules: programmable time slots per room

Technical Specifications – Bosch BTH-RAD

• Model: BTH-RAD
• Dimensions: 87 × 51 × 51 mm
• Weight (without batteries): 135 g
• Power: 2 × AA (LR6) alkaline batteries
• Battery life: up to 2 years
• Display: Rotatable high-contrast LED with multicolour ring
• Control accuracy: ±0.5 °C
• Temperature range: 0 °C to +50 °C
• Humidity range: 10% – 80% RH
• Tap connection: M30 × 1.5 mm
• Wireless protocol: Thread (Matter), 2.4 – 2.4835 GHz
• Max. transmission power: 3 mW
• Free-field range: < 50 m
• Protection class: IP20

What’s in the Box

• 1 × BTH-RAD smart radiator thermostat
• 2 × AA batteries
• 1 × Danfoss RA adapter
• 1 × Danfoss RAVL adapter
• 1 × Multilingual user manual

Compatibility

• Smart ecosystems: Bosch Smart Home, Matter (Thread)
• Voice assistants: Alexa, Siri (Apple HomeKit), Google Assistant

Ideal For:

• Energy-conscious homeowners
• Families with children (child lock)
• Rental apartments (easy installation & removal)
• Smart home enthusiasts using Matter