Here at the heat is on, we put the knowledge of what you need directly in your hands as the homeowner, so you needn’t ask or wait for information from your plumber. Here we give you complete expert guidance for this specific product — so you source all parts needed to ensure a smooth and successful installation when your tradesman arrives.
design & material
- Replacement thermostatic heads designed specifically for use with the Terma SMART valve range.
- Ergonomic VAZ TRV head features a white central digital face encased in a matt silver outer clamshell to match modern silver and grey radiator finishes.
- 5-segment LED indicator shows the currently set temperature and signals active functions, with a fading backlit display for subtle aesthetics.
- Control panel adapts to the installation position of the head (vertical or horizontal).
- Powered by a high-performance Lithium 6700 mAh (24.12Wh) battery, capable of lasting an entire heating season on a single charge depending on operating mode.
- Ready for mounting on M30x1.5 thread; adapters for Danfoss RA, RAV, RAVL, M28x1.5 valves, and Giacomini and Caleffi valves must be sourced separately.
- IPx4 rated, Class 3, UKCA Approved.
finish & colour
- All produced in the matching colour to your radiator.
- Specially manufactured using the same paint colours as Terma radiators for a completely matching finish to the radiator.
function & compatibility
- Full Wi-Fi functionality controlled via the free TERMA Smart app (iOS / Android); no hub required.
- Offers 5 temperature settings ranging from 15 to 28 °C and a 7-day work schedule.
- Built-in temperature sensor; compatible with VTS wall mounted temperature sensor and VOS open window sensor.
- Automatic ANTIFROST function activates when ambient temperature drops to approx. 6 °C.
- Emergency valve opening in case of critically low battery to prevent radiator freezing.
- Features Geo-location functionality, 2-hour drying function, and holiday mode via the app.
- Compatible with all Terma SMART products including: VEO heating element, VAZ TRV head, VOLTAN electric convector heater, VOS open window sensor, and VTS wall mounted thermostat.
installation
- Extremely easy to install with auto-calibration allowing mounting on almost any radiator or thermostatic valve body.
- Pushing shaft retraction function allows convenient installation and removal of the head.
- Battery charging socket hidden under the front cover.
warranty & compliance
- Lot20 Eco-design Directive compliant (electric radiators needing adaptive start control).
- UKCA Approved and meets all relevant safety and performance standards.
- 2-year manufacturer’s warranty for peace of mind.
