KNX RF-MSG-ST

Actuator for KNX Radio for 1 Drive

The KNX RF-MSG-ST is a radio actuator for KNX radio (KNX RF). The actuator controls one drive (blind, shutter, awning or window).

The KNX RF-MSG-ST uses the KNX RF S standard. With retransmitter function (from version 1.1).


  • 1 connection for 230 V-drive (STAK3)
  • Reception of the control signal via radio KNX RF
  • Retransmitter function (from version 1.1): Forwarding of all received KNX RF telegrams. These can be received by KNX RF participants with the same domain address. This allows the range of the KNX RF signal to be increased
  • Automatic runtime measurement of the drives for positioning (incl. fault reporting object)
  • Position feedback (movement position, also slat position for shutters)
  • Position storage (movement position) via 1-bit object (storage and call-up e.g. via buttons)
  • Scene control for movement position with 16 scenes per drive (also slat position for shutters)
  • Blocking objects and alarm reports have different priorities, so safety functions always take precedence (e.g. wind block)
  • Manual or automatic priority setting via time or communication object
  • Brief time limit (movement command blocked) and 2 movement limits
  • Configuration is made using the KNX software ETS 5
Housing Plastic
Protection category IP 54
Dimensions approx. 147 x 36 x 29 (B x H x T, mm)
Weight approx. 140 g
Ambient temperature Operation -25…+70 °C, storage -30…+85°C
Ambient humidity max. 95% RH, avoid condensation
Operating voltage 230 V AC
Input STAS3 plug (230 V)
Output STAK3 coupling, loadable to max. 4 A / 230 V AC
Radio frequency 868,3 MHz