Response time for Abus 2WAY motion sensors

[olle]

Hi all,

I've installed the Secvest 2WAY in my house incl. motion sensors (PET) and magnetic contacts for windows.
I've tested the buglar alarm when entering the house after a day at work, and also done "walk tests".

The magnetic contacts react almost instantly.
The motion sensors are very hard to trigger. Both in walk tast, and in real-life. I can often walk right by one without it triggering.

The motion sensors are installed according to the instructions at approx 2,3m height.

Any advice?