Abus FU8350 Manual page 21

Note: When delivered, the sensor cover may be set in the
lowered position. Check this as a possible cause if the
sensor does not detect any movement.
Attaching the rear housing side
The sensor is designed for mounting on a wall or in a
corner. Holes have already been cut out of the rear for this
purpose. Only use suitable wall plugs and screws for
installation. When choosing the installation location, check
the range of view and communication with the alarm centre
(see "PIR test").
Raised sensor
cover
Lowered sensor
21
cover