Salus TRV3RF Smart Thermostatic Radiator Valve - Zigbee 3.0, Battery Powered, Super Quiet TRV Head
Salus TRV3RF Smart Thermostatic Radiator Valve - Zigbee 3.0, Battery Powered, Super Quiet TRV Head
The Salus TRV3RF is a Zigbee 3.0 battery-powered smart thermostatic radiator valve head designed to be heard as little as possible — operating at under 25 dBA, well below the audible threshold of most traditional motorised TRV heads. It replaces an existing TRV head on a standard M30 × 1.5, M28 × 1.5 or Danfoss RA valve body using a quick-fit coupling, with no draining, no tools and no pipe work required.
Once paired to the Salus Smart Home network via the UG800 gateway, the TRV3RF gives per-room temperature scheduling, remote control and automation from the Salus Premium Lite app. Its dual built-in thermal sensors and a self-learning PI (Proportional-Integral) algorithm continuously modulate the valve opening to maintain the setpoint without overshooting — unlike hysteresis-based TRVs that oscillate above and below target. Open Window Detection automatically reduces heating if a rapid temperature drop is sensed. The LCD updates every 15 seconds and can be rotated to any of four orientations to suit the valve's position. Up to 6 TRV3RF valves can be paired with one Elypso EL600T thermostat for zone-level coordination.
The brushless motor and precision actuator mechanism operate at under 25 dBA — quieter than a library whisper. Ideal for bedrooms, nurseries and open-plan living spaces where traditional TRV clicking and grinding is a nuisance.
A self-learning Proportional-Integral algorithm continuously adjusts valve opening based on how far the room is from the setpoint and the rate of change — modulating smoothly rather than snapping fully open or closed like hysteresis systems.
Two temperature sensors improve measurement accuracy and reduce false readings from localised heat sources near the valve body — the readings update every 15 seconds for faster response than most competing TRV heads.
Monitors room temperature rate-of-change. A rapid drop triggers the TRV3RF to temporarily reduce its setpoint — preventing heat loss through an open window — then restores the programme when the temperature stabilises.
The LCD display and body rotate to four positions — readable whether the valve is horizontal, angled upward or downward on any radiator. Shows current setpoint and local temperature at all times.
Can operate as a standalone room controller using its own schedule and setpoint, or paired with an Elypso EL600T thermostat for zone-level coordination — up to 6 TRV3RF valves per thermostat. When paired, the thermostat can also trigger the boiler via an RX30RF receiver when any valve in the zone calls for heat.
| Manufacturer | SALUS Controls (Computime Group) |
| Model | TRV3RF |
| Description | Super Quiet Smart Thermostatic Radiator Valve Head |
| Operating noise | < 25 dBA |
| Control algorithm | PI (Proportional-Integral) self-learning |
| Temperature sensor refresh | Every 15 seconds |
| Valve output force | 100 N |
| Temperature display | LCD — 4 selectable orientations |
| Connectivity | Zigbee 3.0 / 2.4 GHz |
| Power supply | 2 × AA alkaline batteries |
| Battery life | Approx. 18 months |
| Open Window Detection | Yes |
| Valve body compatibility | M30 × 1.5 (direct fit); M28 × 1.5 adaptor; Danfoss RA adaptor |
| Max. TRVs per EL600T thermostat | 6 |
| Standalone mode | Yes — can operate without a room thermostat |
| Gateway required for app control | Salus UG800 or UGE600 |
| Dimensions (Ø × H) | Ø 54 mm × 91.3 mm (M30); Ø 54 mm × 91.5 mm (M28); Ø 54 mm × 104.2 mm (RA) |
| Warranty | 5 years manufacturer |
Can I use the TRV3RF without a Salus thermostat?
Yes — in standalone mode the TRV3RF acts as the primary temperature controller for the radiator, using its own on-board schedule and setpoint. This is useful for rooms where an independent schedule is preferred. When paired with an Elypso EL600T thermostat, up to 6 TRV3RF valves per thermostat can be coordinated as a zone, enabling the thermostat to activate the boiler (via an RX30RF) when any of the paired valves calls for heat.
What makes it quieter than other smart TRV heads?
The TRV3RF uses a brushless motor and precision-ground actuator designed to operate below 25 dBA. In practice, the adjustment cycle is nearly inaudible in a normal room — compared with older wax-element or standard motor TRV heads that produce audible clicking and humming during adjustment.
Why does PI control matter over standard hysteresis control?
A standard hysteresis TRV opens when the room is too cold and closes when it reaches the setpoint — causing temperature to overshoot and then swing below again. The TRV3RF's PI algorithm continuously adjusts the valve opening proportionally to the error and rate of change, maintaining a steadier temperature without cycling — particularly noticeable in well-insulated rooms or when other heat sources are present.
Does it drain down a radiator to install?
No — because it is a head-only replacement that screws onto an existing TRV valve body. The quick-fit coupling locks onto the spindle in seconds without disturbing the water side of the valve. No draining, no pipe work, no specialist tools required.
Original: $107.97
-65%$107.97
$37.79More Images
Salus TRV3RF Smart Thermostatic Radiator Valve - Zigbee 3.0, Battery Powered, Super Quiet TRV Head
The Salus TRV3RF is a Zigbee 3.0 battery-powered smart thermostatic radiator valve head designed to be heard as little as possible — operating at under 25 dBA, well below the audible threshold of most traditional motorised TRV heads. It replaces an existing TRV head on a standard M30 × 1.5, M28 × 1.5 or Danfoss RA valve body using a quick-fit coupling, with no draining, no tools and no pipe work required.
Once paired to the Salus Smart Home network via the UG800 gateway, the TRV3RF gives per-room temperature scheduling, remote control and automation from the Salus Premium Lite app. Its dual built-in thermal sensors and a self-learning PI (Proportional-Integral) algorithm continuously modulate the valve opening to maintain the setpoint without overshooting — unlike hysteresis-based TRVs that oscillate above and below target. Open Window Detection automatically reduces heating if a rapid temperature drop is sensed. The LCD updates every 15 seconds and can be rotated to any of four orientations to suit the valve's position. Up to 6 TRV3RF valves can be paired with one Elypso EL600T thermostat for zone-level coordination.
The brushless motor and precision actuator mechanism operate at under 25 dBA — quieter than a library whisper. Ideal for bedrooms, nurseries and open-plan living spaces where traditional TRV clicking and grinding is a nuisance.
A self-learning Proportional-Integral algorithm continuously adjusts valve opening based on how far the room is from the setpoint and the rate of change — modulating smoothly rather than snapping fully open or closed like hysteresis systems.
Two temperature sensors improve measurement accuracy and reduce false readings from localised heat sources near the valve body — the readings update every 15 seconds for faster response than most competing TRV heads.
Monitors room temperature rate-of-change. A rapid drop triggers the TRV3RF to temporarily reduce its setpoint — preventing heat loss through an open window — then restores the programme when the temperature stabilises.
The LCD display and body rotate to four positions — readable whether the valve is horizontal, angled upward or downward on any radiator. Shows current setpoint and local temperature at all times.
Can operate as a standalone room controller using its own schedule and setpoint, or paired with an Elypso EL600T thermostat for zone-level coordination — up to 6 TRV3RF valves per thermostat. When paired, the thermostat can also trigger the boiler via an RX30RF receiver when any valve in the zone calls for heat.
| Manufacturer | SALUS Controls (Computime Group) |
| Model | TRV3RF |
| Description | Super Quiet Smart Thermostatic Radiator Valve Head |
| Operating noise | < 25 dBA |
| Control algorithm | PI (Proportional-Integral) self-learning |
| Temperature sensor refresh | Every 15 seconds |
| Valve output force | 100 N |
| Temperature display | LCD — 4 selectable orientations |
| Connectivity | Zigbee 3.0 / 2.4 GHz |
| Power supply | 2 × AA alkaline batteries |
| Battery life | Approx. 18 months |
| Open Window Detection | Yes |
| Valve body compatibility | M30 × 1.5 (direct fit); M28 × 1.5 adaptor; Danfoss RA adaptor |
| Max. TRVs per EL600T thermostat | 6 |
| Standalone mode | Yes — can operate without a room thermostat |
| Gateway required for app control | Salus UG800 or UGE600 |
| Dimensions (Ø × H) | Ø 54 mm × 91.3 mm (M30); Ø 54 mm × 91.5 mm (M28); Ø 54 mm × 104.2 mm (RA) |
| Warranty | 5 years manufacturer |
Can I use the TRV3RF without a Salus thermostat?
Yes — in standalone mode the TRV3RF acts as the primary temperature controller for the radiator, using its own on-board schedule and setpoint. This is useful for rooms where an independent schedule is preferred. When paired with an Elypso EL600T thermostat, up to 6 TRV3RF valves per thermostat can be coordinated as a zone, enabling the thermostat to activate the boiler (via an RX30RF) when any of the paired valves calls for heat.
What makes it quieter than other smart TRV heads?
The TRV3RF uses a brushless motor and precision-ground actuator designed to operate below 25 dBA. In practice, the adjustment cycle is nearly inaudible in a normal room — compared with older wax-element or standard motor TRV heads that produce audible clicking and humming during adjustment.
Why does PI control matter over standard hysteresis control?
A standard hysteresis TRV opens when the room is too cold and closes when it reaches the setpoint — causing temperature to overshoot and then swing below again. The TRV3RF's PI algorithm continuously adjusts the valve opening proportionally to the error and rate of change, maintaining a steadier temperature without cycling — particularly noticeable in well-insulated rooms or when other heat sources are present.
Does it drain down a radiator to install?
No — because it is a head-only replacement that screws onto an existing TRV valve body. The quick-fit coupling locks onto the spindle in seconds without disturbing the water side of the valve. No draining, no pipe work, no specialist tools required.
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Description
The Salus TRV3RF is a Zigbee 3.0 battery-powered smart thermostatic radiator valve head designed to be heard as little as possible — operating at under 25 dBA, well below the audible threshold of most traditional motorised TRV heads. It replaces an existing TRV head on a standard M30 × 1.5, M28 × 1.5 or Danfoss RA valve body using a quick-fit coupling, with no draining, no tools and no pipe work required.
Once paired to the Salus Smart Home network via the UG800 gateway, the TRV3RF gives per-room temperature scheduling, remote control and automation from the Salus Premium Lite app. Its dual built-in thermal sensors and a self-learning PI (Proportional-Integral) algorithm continuously modulate the valve opening to maintain the setpoint without overshooting — unlike hysteresis-based TRVs that oscillate above and below target. Open Window Detection automatically reduces heating if a rapid temperature drop is sensed. The LCD updates every 15 seconds and can be rotated to any of four orientations to suit the valve's position. Up to 6 TRV3RF valves can be paired with one Elypso EL600T thermostat for zone-level coordination.
The brushless motor and precision actuator mechanism operate at under 25 dBA — quieter than a library whisper. Ideal for bedrooms, nurseries and open-plan living spaces where traditional TRV clicking and grinding is a nuisance.
A self-learning Proportional-Integral algorithm continuously adjusts valve opening based on how far the room is from the setpoint and the rate of change — modulating smoothly rather than snapping fully open or closed like hysteresis systems.
Two temperature sensors improve measurement accuracy and reduce false readings from localised heat sources near the valve body — the readings update every 15 seconds for faster response than most competing TRV heads.
Monitors room temperature rate-of-change. A rapid drop triggers the TRV3RF to temporarily reduce its setpoint — preventing heat loss through an open window — then restores the programme when the temperature stabilises.
The LCD display and body rotate to four positions — readable whether the valve is horizontal, angled upward or downward on any radiator. Shows current setpoint and local temperature at all times.
Can operate as a standalone room controller using its own schedule and setpoint, or paired with an Elypso EL600T thermostat for zone-level coordination — up to 6 TRV3RF valves per thermostat. When paired, the thermostat can also trigger the boiler via an RX30RF receiver when any valve in the zone calls for heat.
| Manufacturer | SALUS Controls (Computime Group) |
| Model | TRV3RF |
| Description | Super Quiet Smart Thermostatic Radiator Valve Head |
| Operating noise | < 25 dBA |
| Control algorithm | PI (Proportional-Integral) self-learning |
| Temperature sensor refresh | Every 15 seconds |
| Valve output force | 100 N |
| Temperature display | LCD — 4 selectable orientations |
| Connectivity | Zigbee 3.0 / 2.4 GHz |
| Power supply | 2 × AA alkaline batteries |
| Battery life | Approx. 18 months |
| Open Window Detection | Yes |
| Valve body compatibility | M30 × 1.5 (direct fit); M28 × 1.5 adaptor; Danfoss RA adaptor |
| Max. TRVs per EL600T thermostat | 6 |
| Standalone mode | Yes — can operate without a room thermostat |
| Gateway required for app control | Salus UG800 or UGE600 |
| Dimensions (Ø × H) | Ø 54 mm × 91.3 mm (M30); Ø 54 mm × 91.5 mm (M28); Ø 54 mm × 104.2 mm (RA) |
| Warranty | 5 years manufacturer |
Can I use the TRV3RF without a Salus thermostat?
Yes — in standalone mode the TRV3RF acts as the primary temperature controller for the radiator, using its own on-board schedule and setpoint. This is useful for rooms where an independent schedule is preferred. When paired with an Elypso EL600T thermostat, up to 6 TRV3RF valves per thermostat can be coordinated as a zone, enabling the thermostat to activate the boiler (via an RX30RF) when any of the paired valves calls for heat.
What makes it quieter than other smart TRV heads?
The TRV3RF uses a brushless motor and precision-ground actuator designed to operate below 25 dBA. In practice, the adjustment cycle is nearly inaudible in a normal room — compared with older wax-element or standard motor TRV heads that produce audible clicking and humming during adjustment.
Why does PI control matter over standard hysteresis control?
A standard hysteresis TRV opens when the room is too cold and closes when it reaches the setpoint — causing temperature to overshoot and then swing below again. The TRV3RF's PI algorithm continuously adjusts the valve opening proportionally to the error and rate of change, maintaining a steadier temperature without cycling — particularly noticeable in well-insulated rooms or when other heat sources are present.
Does it drain down a radiator to install?
No — because it is a head-only replacement that screws onto an existing TRV valve body. The quick-fit coupling locks onto the spindle in seconds without disturbing the water side of the valve. No draining, no pipe work, no specialist tools required.
