Electronic motion detector for detecting heat movements. Outputs: Normally closed, potential-free. Detection and operating mode display. Floor and return field monitoring. Flexible installation through three swivel joints. Level adjustment: - 30 profile lens for optimal detection. Monitoring density: 84 sectors with 336 switching segments. Brightness-independent test operation for evaluating the detection area. Integrated disassembly difficulty. Additional activation option via normally open push button. Integrated twilight sensor, adjustable switching threshold. Optional "square design" via Busch-Wächter frame 6851DR-xxx (not included). Automatic interference suppression. Automatic glare safety. Automatic range stabilization. Summer and winter operation. When used in conjunction with a relay contactor, an RC suppression element is required. Installation: Single-point mounting possible. Suitable for wall and ceiling mounting. Corner mounting possible with corner adapter 6851EA-xxx (not included). Multi-cable entry on the back and side wall with sealing collar. Mounting on ISO switch box 68 mm possible. Connection terminals with lever for single, fine, or multi-stranded conductors. Setting of basic functions optionally via potentiometer or Bluetooth app: Potentiometer: - Switch-off delay: 10 to 30 min, short pulse, twilight switching threshold, test operation. Bluetooth app: - Switch-off delay: 10 to 30 min, short pulse, twilight switching threshold, test operation, permanent ON, permanent OFF, comfort function permanent ON at twilight, guardian operation from a specific time, timer for connected lighting, detection field left-right in levels, detection sensitivity, operating modes normal, stairwell, continuous operation.