COMPUTHERM Q12RF

Wireless (radio-frequency) thermostat-controlled motorised actuator for radiator valves

The COMPUTHERM Q12RF is a motorised actuator (receiver unit) for controlling radiator valves; it is operable via a compatible thermostat. It works exclusively with the purpose-designed COMPUTHERM Q72RF (TRV) special wireless (radio-frequency) thermostats and with the COMPUTHERM Q20RF Wi-Fi (TX) thermostats (not included). Fitted to a radiator valve using the actuator’s flare nut (and the supplied adapters), it controls the opening and closing of the valve. It is particularly recommended for locations (such as apartments with district heating or systems without individually controlled manifolds) where the heating device cannot be directly controlled but independent temperature regulation of the rooms is required, enhancing comfort and reducing energy costs.

A theft-resistant securing ring, specifically designed for this purpose, prevents easy removal of the actuator from the radiator, thereby enhancing security and protection against vandalism.

Important technical informations:

  • Operates only with Q72RF (TRV) and Q20RF Wi-Fi (TX) wireless (radio-frequency) thermostats (not included).
  • Wireless (radio-frequency) communication between the motorised actuator (receiver) and the thermostat (transmitter), so no wiring is required.
  • Usable in automatic (thermostat-controlled) and manual modes
  • Theft-resistant securing ring

Technical data:

  • Battery voltage: 2 × 1.5 V AA alkaline batteries (LR6)
  • Dimensions of the flare nut: M30 × 1.5 mm (with six additional adapters: Danfoss RA; Danfoss RAV; Danfoss RAVL; Caleffi; Giacomini; M28 × 1.5 mm)
  • Protection against environmental impacts: IP30
  • Operating frequency: 868.35 MHz
  • Maximum stroke: 7 mm
  • Opening/closing time: max. 25 s
  • Opening force: 78–166 N
COMPUTHERM Q12RF thermostat-controlled motorised actuator
COMPUTHERM Q12RF thermostat-controlled motorised actuator
COMPUTHERM Q12RF thermostat-controlled motorised actuator
COMPUTHERM Q12RF thermostat-controlled motorised actuator

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FAQ: 
What purpose can the COMPUTHERM Q12RF actuator be used for?

The COMPUTHERM Q12RF is a thermostat-controlled motorised actuator (receiver unit) designed for controlling radiator valves. It operates exclusively with the COMPUTHERM Q72RF (TRV) special wireless (radio-frequency) thermostats and the COMPUTHERM Q20RF Wi-Fi (TX) thermostats (not included). Mounted onto a radiator valve using its flare nut (and supplied adapters), it regulates the valve’s opening and closing. It is especially recommended for installations where the heating appliance cannot be controlled directly—e.g. district-heated flats or systems without a manifold—yet individual room temperature control is desired, improving comfort and reducing energy costs.

Where should the actuator and its thermostat be installed?

The COMPUTHERM Q12RF actuator should be mounted on the valve of the radiator to be controlled (using adapters if necessary), protected from moisture, dust, and chemicals.
The controlling wireless thermostat should ideally be placed in the same room as the radiator, positioned in the natural airflow but away from drafts, sunlight, or heat sources (e.g. fridges, chimneys), and at least 1–2 m from large metal objects. The optimal height is 0.75–1.5 m above the floor.

Which devices can the Q12RF control?

When mounted on a radiator valve, it opens or closes the valve. It is ideal for systems where the heating unit cannot be directly controlled, such as district heating or apartments without manifolds but with valve-based circuit control.

Does the actuator require a 230 V power supply?

No. It operates on 2 × 1.5 V AA alkaline batteries (LR6).

Where can it be purchased?

Available from COMPUTHERM reseller partners and numerous online stores.

Where can the user manual be found?

Installing and operating instructions for the Q12RF actuator are available at the following website:

Do multiple wireless actuators in one apartment interfere with each other?

No. Each thermostat and actuator pair has a unique security code, ensuring interference-free operation. Multiple units can be used in close proximity without communication issues.

Why doesn’t the actuator adjust the radiator?

Possible causes:

● Incorrect or depleted batteries (non-alkaline or discharged)
● Unstable radio connection (see below)
● Thermostat and actuator are out of sync and must be re-paired (see user manual)

What causes an unstable radio connection?

● Incorrect or depleted batteries (non-alkaline or discharged)
● Excessive distance or obstacles (e.g. reinforced concrete floors, thick walls)
● Improper placement of thermostat or actuator
● Nearby strong radio-frequency devices (e.g. baby monitors, wireless headsets)
● External interference (e.g. nearby high-power antennas)

What to do if communication is weak or lost?

● Check if the devices are paired; if not, re-pair them per the manual.
● Reduce the distance between the devices.
● Relocate the units as instructed in the manual.
● Avoid using nearby high-power RF devices (e.g. baby monitors, wireless headphones).

Can one actuator be paired with multiple thermostats?

Yes. In such cases, the actuator remains on until all paired thermostats send an off signal.