Busch-Watchdog 180 flush-mounted standard sensor

Hands free for the important things.

The convenient home help. The flush-mounted Busch-Watchdog 180 standard is the ideal movement detector for the stairwell, hall and large rooms without a clear overview. They react as soon as they register body heat. And they leave no one standing in the dark.


The optimum shape.

A flush-mounted movement detector must match perfectly with its surroundings while at the same time reliably fulfilling its detecting function. The flush-mounted Busch-Watchdog 180 Standard is optimally designed for this. Not too flat and not too high. Nothing escapes their notice. The flush-mounted Busch-Watchdog 180 Standard is available in the design of the Reflex SI Linear switch range.


Everything under control.

The flush-mounted Busch-Watchdog 180 Standard offers a large range of effectiveness, especially during a frontal approach. As soon as someone enters the door the switching process is triggered. It switches off automatically when exiting. The detection angle is 180° and extends laterally up to the wall. In spite of its compact dimensions it has a transmission range of twelve meters frontal and eight meters lateral. Depending on the spatial conditions, the connection of an additional movement detector is recommended, which is connected as extension unit. For example, when an area that does not lie within the detection range is accessed.


Tips for industry solutions.

Light, when it is needed. And the reverse. Illumination that thinks along. In offices, hotels or public buildings light must function reliably and safely. But only when it is actually needed. Unnecessary switching of light means additional use of energy. The intelligent Busch-Watchdogs handle this task impressively and especially economically in all areas.


Switch range.

This product is available in the following versions.


Functions of the select lens:

Monitors an area from above 1.20 m, that is why small animals are not detected.

  • Mounting height: 0.80 m to 1.20 m
  • Detection range: 12 m frontal, 8 m to each side

Application as main and auxiliary device.

If more than only one movement detector is required, additional movement detectors can be installed using extension units inserts. This is a convenient solution for windy cellars or L-shaped corridors.


  • For automatic switching of loads in dependence of movement and brightness
  • For detection with animal access
  • For relay insert 6401 U-102, 6402 U and 6812 U-101
  • For MOS Fet insert 6804 U-101
  • For LED dimmer insert 6524 U
  • For dimmer insert 6593 U
  • For extension unit insert 6805 U
  • Monitoring density: 18 sectors with 72 switching segments
  • Switch-off delay: 80 s
  • Protection type sensor: IP 20
  • Detection range: frontal 12 m, lateral 8 m
  • Brightness limit value: 5 lux up to daytime operation
  • Opening angle: 180°
  • Mounting height: 0.80 m – 1.20 m