Energeeks EG-SA002 Guía De Instalación Rápida página 18

Door / window opening detector
Installation
Place the transmitter sensor on the door / window and the
magnetic one on the door / window, the transmitter has a
triangular mark on one of the sides that indicates that this is
the side where the magnetic should be approached; both must
be installed within less than one cm apart.
If the door / window protrudes from the frame, the installation
kit has risers to match the height difference.
Magnetic
Transmitter
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