The device signals the opening of windows or doors. As flush mounting device, it can be instaled in 8 millimetes round holes
to be installed as surface mounting, it needs the provided adapter.
It must be necessarily connected to a perimeter magnet reed contact detector (SMC-W1.1x) or to a dual passive IR perimeter motion detector (SMD-W2.1x)
for this purpose it is equipped with a 1.2 meter connection cable.