Actuators with drive outputs

With the Actuators KNX S2 and KNX S4 with integrated facade control, the drives of shutters, awnings, blinds or windows are controlled. The connected drives can be directly operated with the switch pairs of the actuator.
With the potential-free design of the outputs, drives of up to 30 VDC and 230 VAC can be controlled, as well as other systems (e.g. manual switch input of a motor control unit).
The automation for the shading or window ventilation is specified externally or internally. Internally, there are numerous options available for blocking, locking (e.g. master-slave) and priority definitions (e.g. manual-automatic). Scenes are saved and called up via the bus (scene control with 16 scenes per drive).

N° 70540 KNX S4, 4 outputs
N° 70541 KNX S2, 2 outputs

  • KNX S4 (70540) KNX S4 (70540)
  • KNX S2 (70541) KNX S2 (70541)
  • Potential-free outputs for drives of shading or windows
    KNX S2: 2 outputs| KNX S4: 4 outputs
  • Switch panel with switch pairs and status LEDs
  • 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)
  • Control via internal or external automation functions
  • Integrated shade control for each drive output (with slat tracking according to sun position for shutters)
  • Integrated window ventilation control
  • Scene control for movement position with 16 scenes per drive (also slat position for shutters)
  • Mutual locking of two drives using zero position sensors prevents collisions e.g. of shade and window (master–slave)
  • Blocking objects and alarm reports have different priorities, so that safety functions always take precedence (e.g. wind block)
  • Manual or automatic control configuration per time or communication object
  • 5 security objects for each channel
  • Brief time limit (movement command blocked) and 2 movement limits
  • Configuration is made using the KNX software ETS
Housing Plastic
Colour White
Assembly Series installation on mounting rail
Protection category IP 20
Ambient temperature Operation -20…+70°C, storage -55…+90°C
Ambient humidity max. 95% RH, avoid condensation
Data output KNX +/- bus plug terminal


Dimensions approx. 107 x 88 x 60 (W x H x D, mm), 6 modules
Weight approx. 350 g
Operating voltage 230 V AC, 50 Hz
Power consumption max. 3 W
Current at the bus approx. 10 mA
Outputs4 × output up/down potential-free,
up to 30 V DC or 230 V AC,
max. 4 A per output with resistive load
Communication objects 409


Dimensions approx. 53 x 88 x 60 (W x H x D, mm), 3 modules
Weight approx. 150 g
Operating voltage bus voltage
Current at the bus approx. 22 mA
Outputs 2 × output up/down potential-free,
up to 30 V DC or 230 V AC,
max. 4 A per output with resistive load
Communication objects 207