Motion detector attachment 1.10 m standard for KNX stainless steel (painted) system 55. Sensitivity adjustment via a control knob on the device. Display of motion detection (permanent or only during walk test). One configurable function block. Configurable function block for the applications "Guardian," "Guardian with cut-off brightness," or "Detector." The function block has two output communication objects available, through which the switching and control commands are sent to the KNX bus. Configurable functions: Switching, stairwell function, dimmer, scene substation, temperature sensor, brightness sensor, operating mode switching, forced switching. Switching of operating mode (OFF / AUTO / ON) during operation via local control or through communication object via local control at additional KNX motion detectors using touch sensor for KNX or visualization. The function block can determine the duration after the last movement in brightness-independent operation and send it via a communication object to the KNX bus. This function allows for simple monitoring of people’s movements in assisted living or in a senior residence. The operation of motion detection is adjustable in the applications "Guardian" or "Guardian with cut-off brightness." The device can be used in the applications "Guardian" or "Guardian with cut-off brightness" as a standalone device, as a main or substation. Walk test function to assist in the planning and adjustment of the PIR detection area.