from your wireless alarm centre. The reception range is strongly
dependent on the structural characteristics of the building.
7.1. Location check
The incoming signal strength should be measured at the
planned installation location for the info module. The FU3801
wireless testing box from our product range can be used for this
purpose. If you do not possess a wireless testing box, then the
info module itself can be used to display the signal strength
(see “Testing the signal strength”).
Avoid installation in the following locations:
Next to or on large metal structures. Less than one meter away
from power lines and metal, water and gas pipes. Inside steel
cases. Next to electrical devices, especially computers, photo-
copiers or communication devices.
7.2. Opening the housing
To access the rear wall, loosen the screw at the bottom of the
housing (1) and move the front part upwards carefully (2). Dis-
connect the piezo signaller cable from the PCB (3) before com-
pletely removing the rear wall.
