KNX S1R-B4 compact

Multifunctional Actuator, 4 Binary Inputs

The Actuator KNX S1R-B4 compact with integrated façade control has got a multifunctional output which can connect to either a drive with Up/Down control (blinds, awnings, shutters, windows) or two switchable devices (On/Off for light and ventilation). Because the output is designed to be free of potential, other systems can also be controlled, e.g. via the manual switch input on a motor control unit.

Automation can be 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 can be saved and called up via the bus (scene control with 16 scenes).

4 digital inputs are available for the connection of binary contacts. A zero position sensor or pushbutton, for example, can be connected here.


• Free of potential multifunctional output for a 230 V drive (shading, windows) or connection of two switchable devices (light, fan)
• 4 binary inputs
• 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)
• Parameters for taking drive and mechanics downtimes into account
• Control via internal or external automation functions
• Integrated shade control with slat adjustment for shutters based on the position of the sun
• Scene control for movement position with 16 scenes (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 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
Colour White
Assembly Flush-mounted (in connector socket Ø 60 mm, 60 mm deep)
Protection category IP 20
Dimensions Ø approx. 52 mm, depth approx. 24 mm
Weight approx. 40 g
Ambient temperature Operation -20…+70°C, storage -30…+85°C
Ambient humidity 5...80% RH, non-condensing
Operating voltage KNX bus voltage
Current at the bus relays not energised: 15 mA
2 relays energised: 18 mA
Output 1 × output, free of potential with 2 connections for drive up/down or 2 devices, power supply U
Inputs 4× digital, maximum cable length 10 m
Data output KNX +/- bus connector terminal
BCU type Integrated microcontroller
PEI type 0
Group addresses max. 254
Assignments max. 254
Communication objects 156
made in germany