Installation and Operation Guide

MTX-15 Installation & Operation Guide Page 1-7
Signal Relay Circuit (used to ring Bell/Buzzer)
Warning! All connections to the relay contacts must be Class 2 wiring
with a maximum of 24 VDC, 1A.
The MTX-15 is equipped with one (1) NORMALLY OPEN (NO) relay
contact that can be used to control external equipment such as a bell or
buzzer. Connection to the contacts is via the screw terminal block
located on the back panel PCB alongside the serial connector. The
terminal block can be removed from the PCB to facilitate wiring
(see Figure 8). If removed, once connections are made, carefully
re-install the terminal block.
Figure 8: Signal Relay Circuit Location & Connection
Connections to the
relay contacts are
made as follows.
Serial
Connection.
Coin
Battery.
Relay Circuit
Terminal Block
Removed from
PCB.