AJAX Hub User Manual page 256

Location of the Transmitter determines its remoteness from the hub and presence of any obstacles between the
devices hindering the radio signal transmission: walls, inserted floors, large-size objects located within the room.
Check the signal strength level at the installation location
If the signal level is one division, we cannot guarantee stable operation of the security system. Take possible
measures to improve the quality of the signal! As a minimum, move the device – even 20 cm shift can significantly
improve the quality of reception.
If, after moving, the device still has a low or unstable signal strength, use a radio signal range extender ReX.
The Transmitter should be encased inside the wired detector case. The Module requires a space with the following
minimum dimensions: 110 х 41 х 24 mm. If the installation of the Transmitter within the detector case is impossible,
then any available radiotransparent case could be used.
1. Connect the Transmitter to the detector through the NC/NO contacts (choose the relevant setting in the application)
and COM.
The maximum cable length for connecting the sensor is 150 m (24 AWG twisted pair). The value may vary when using different type of cable.
The function of the Transmitter's terminals