tado Smart Radiator Thermostat V3+ Add-On - Compact Multi-Room Heating Control

tado Smart Radiator Thermostat V3+ Additional Radiator Thermostat extends an existing tado V3+ heating setup to individual radiators with a compact 78 mm tall housing. For households with a tado Starter Kit, room-by-room control and app scheduling matter most.

tado Smart Radiator Thermostat V3+ Additional Radiator Thermostat targets households that already use a tado Starter Kit and want to bring extra radiators under the same smart heating control. The add-on replaces a conventional mechanical valve head and integrates the additional heater into the tado app, including schedules and remote control via Wi-Fi.

Design, Dimensions And Hardware Details

The additional Smart Radiator Thermostat V3+ is built as a compact cylinder measuring 78 mm in height and 52 mm in diameter, with a weight of around 183 g, so it does not protrude far from standard radiators and fits visually into most living spaces.Dimensions and weight data The device uses a threaded connection with M30 x 1.5, which is the standard for many modern thermostatic radiator valves, and ships with adapter pieces supporting Danfoss RA, RAV and RAVL valves for broader compatibility in older installations.Valve thread and adapter information

Power is supplied by two AA batteries housed inside the thermostat body, activated on first use by pulling a small tab; the design also allows the use of specific rechargeable AA cells such as Panasonic Eneloop 1900 mAh NiMH, while other rechargeable types are not recommended according to technical documentation.Battery type recommendation Inside, the V3+ generation features updated electronics compared with earlier tado radiator thermostats, which a detailed review describes as enabling shorter update times and a faster user interface when changing temperature settings or applying schedules.Review of electronics and response time

Smart Features, Sensors And Platform Integration

Beyond the mechanical form factor, the Smart Radiator Thermostat V3+ add-on integrates digital sensing and connectivity that makes the product part of a broader smart home system. Each thermostat includes an internal temperature sensor and a humidity sensor, allowing the system to monitor local climate conditions at the radiator and use them for more accurate room control.Temperature and humidity sensor description In practical terms, users can assign individual thermostats to specific rooms in the tado app, creating multi-room control where the heating behavior is tuned to occupancy and preferences in each area.

Integration with major smart home platforms is a central feature of the V3+ generation. A test report highlights support for voice control through Amazon Alexa and Google Assistant, as well as compatibility with Apple HomeKit, which allows thermostats to participate in scenes and automations across different devices.Voice assistant and HomeKit support The app itself runs on Android and iOS and ties together scheduling, geofencing, and remote access; separate documentation from tado notes that the V3+ line uses a distinct connectivity standard that is not compatible with newer tado X products, underscoring the importance of matching add-ons to the correct generation.Compatibility and generation information

System Requirements And Compatibility With Starter Kits

The additional Smart Radiator Thermostat V3+ does not operate as a standalone controller. It is designed specifically as an expansion unit for households that already have a tado Starter Kit of the V2, V3 or V3+ generations, including the required Internet Bridge that manages communication between individual thermostats and the cloud service.Starter Kit requirement A support article outlines several versions of V3+ Starter Kits, covering wired and wireless smart thermostats and starter kits built around smart radiator thermostats, all of which use an Internet Bridge with the device model IB01 to coordinate system communication.Starter Kit and bridge details

Compatibility guidance from tado makes clear that users with existing V3+ setups can expand their systems through these V3+ add-ons, but newer tado X devices and their Bridge X hardware do not interoperate with V3+ units.Compatibility guidance For radiators, the smart valves are intended for typical thermostatic radiator valves and are supplied with hardware adapters to accommodate a wide range of valve designs. A retailer listing notes that direct temperature adjustments at the thermostat range from 5°C to 25°C, while lower temperatures can be configured via the app, offering a broad control window for energy saving.On-device temperature range

Position In The Heating Control Market And Comparison

Within connected heating controls, the tado Smart Radiator Thermostat V3+ Additional Radiator Thermostat addresses users who favor gradual expansion over full-system replacement. Reviews describe the V3+ radiator thermostat as part of a trend toward intelligent individual room control, highlighting improved electronics over earlier tado generations that shorten update times and provide a more responsive interface.Comparison to older tado versions Compared with relying solely on a central smart thermostat controlling a boiler, adding radiator thermostats allows finer zoning, where small rooms or rarely used areas can have separate schedules and temperature limits.

In the broader V3+ ecosystem, the radiator add-on sits alongside starter kits that combine smart thermostats and an Internet Bridge. A support overview notes, for example, that the Starter Kit - Smart Radiator Thermostat V3+ introduced in September 2018 includes one Smart Radiator Thermostat with the device model VA02 plus the IB01 Internet Bridge, while other kits pair wireless receivers and temperature sensors for boiler control.Starter Kit content comparison For users who already own such a kit, the additional thermostat is a way to scale multi-room control without changing boiler hardware; an external retailer’s technical sheet underlines that individual thermostats can manage several radiators within one room or be assigned separately for more granular control.Multi-radiator control description

Use Cases, Limits And Who It Suits

In real use, the additional Smart Radiator Thermostat V3+ suits homes or apartments that already invested in a tado Starter Kit and now want to bring more radiators into that ecosystem, such as bedrooms or home offices that previously relied on manual mechanical valves. The requirement for an existing Internet Bridge and matching V2, V3 or V3+ hardware is a limit compared with standalone Wi-Fi radiator valves that operate independently, and compatibility notes emphasize that tado X products cannot fill that role within a V3+ setup.System generation limitation

For households interested in integrating heating control into voice-assisted routines or HomeKit scenes, the V3+ radiator thermostat offers direct participation in Amazon Alexa, Google Assistant and Apple HomeKit, making it attractive when compared with simple programmable valves that lack app support.Smart platform integration The hardware design, with its standard M30 x 1.5 thread and supplied Danfoss adapters, positions the thermostat as a practical option for retrofitting without specialized tools, particularly in mixed housing stock where valve types differ from room to room.Valve compatibility and adapter coverage

Key Facts At A Glance

• Product: tado Smart Radiator Thermostat V3+ Additional Radiator Thermostat
• Manufacturer: tado GmbH, Munich, Germany
• Category: Smart radiator thermostat (Wi-Fi add-on)
• Dimensions: Height 78 mm, diameter 52 mm, weight about 183 g
• Valve connection: M30 x 1.5 thread with adapters for Danfoss RA, RAV and RAVL valves
• Power supply: 2x AA batteries, with support for specific NiMH rechargeables
• System requirement: tado Starter Kit V2, V3 or V3+ with Internet Bridge IB01
• Target audience: Existing tado V3+ users expanding multi-room radiator control