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b) Installation notes
• Magnetic contacts (reed contacts) are located inside the ‘FHT80TF-2’ door/window contact
sensor both on the left and on the right side.
This means that you can mount the supplied magnet either on the left or on the right side.
A two-sided installation of 2 magnets (one on the left and one on the right of the door/
window contact sensor) is not possible!
• Make absolutely sure that the lower edge of the magnet is 20mm away from the lower edge
of the door/window contact sensor.
Mounting the magnets higher or lower reduces the magnetic range; the magnet must be
installed close to the door/window contact sensor!
The horizontal distance between the magnet and the door/window contact must not exceed
25 mm. The ideal distance is approx. 10 - 15 mm.
< 25 mm
< 25 mm
20 mm
20 mm
Figure 13