User's Manual

GMT100 User Manual
TRACGMT100UM001 -12 -
Figure 7. Typical Connection with Siren
3.10. Relay Output
There is a built-in cut relay on GMT100, and it is a NC(Normal Close) type relay which
maximum switching voltage is 12VDC and maximum continuous current is 20A. On
GMT100 user cable one 18AWG yellow wire is connected to the relay NC contact and the
other 18AWG yellow wire is connected to the relay COM contact. In certain instances the
two wires will be connected together.
Note:
1: The relay output can be latched by the software, so even if the GMT100 is restart or
power down in some cases, the relay output will not change. To use the latch function the
main power and backup battery should be connected. Otherwise the relay will be always
in normal close status.
2: The relay works only with 12V main power. Use it when the main power is 24V may
result in damaging.
Figure 8. Typical Connection with Relay