@B-rock The funny thing is, even the H200 is still tagged as "Coming soon"...

@Solla-topee I'm currently trying different sensitivity adjustments to see whether they bring some improvements. Please wait, thanks.

@Solla-topee The detection algorithm on the camera seems to ignore postmen who come on bike... depending on the trajectory they make through the alley to get to my postbox.

@sequeira

@MarioInJapan But, you already answered that with the T110 sensor my need cannot be satisfied. I would need something alse like this (from IKEA):

@Wayne-TP Please see this picture. Surfaces A and B, where the two parts of the door sensors should be affixed, are at right angle (part A belongs to the door frame, and part B to the door):