AJAX DoorProtect Plus User Manual page 14

We recommend installing the wired detector at a distance no longer than 1 meter
to DoorProtect Plus. Longer wire length increases the risk of its damage and
reduces the quality of communication between the detectors.
To put out the wire from the detector body, break out the plug:
If the connected wired detector is triggered, you receive the notification.
To make sure the alarm is raised when the roller shutter is opened, connect the
wired roller shutter motion detector with the NC (normally closed) contact to