Radiator control actuator

Stock no. BPZ:SSA955

Stock no. BPZ:SSA955

RF-based actuator for radiator valves.

The SSA955 controls the room temperature based on the data forwarded by the central apartment unit QAX9...

  • Battery-powered by commercially available 1.5 V batteries (contained in the scope of delivery)

  • Silent mode (e.g. for use in sleeping rooms)

  • Automatic identification of valve stroke

  • Parallel connection of multiple actuators possible

  • Integrated temperature sensor

  • For direct mounting with coupling nut (no tools required)

  • Manual adjustment

  • RF communication based on KNX standard (868 MHz, bidirectional)

Additional info

Suitable adaptors for valves of other manufacturers types AV5 . and AV6 .‚ see chapter " Valves and actuators for room- and zone applications"



Positioning force

110 N


2.5 mm

Degree of protection


Ambient temperature, operation

1...50 °C

Medium temperature

1...110 °C

Dimensions (W x H x D)

48 x 95 x 80.6 mm

Mounting position

Upright to 90° inclined

Voltage supply

Mignon (3xAA) LR6

Battery capacity

2.5 Ah

Battery life

3 years (2 years in silent mode)

Connecting thread

M30 x 1.5

Measuring range, temperature

0...50 °C


KNX RF-compatible, 868.3 MHz bidirectional (RF)

Indoor wireless range

30 m

Sound power level

Silent mode: <25, Normal mode: <30 dB (A) (faulty format)