5
5.
Now wire the Power Supply and relay output to the terminals
on the PCB as described in the diagrams that follow.
Wiring of the Intercom
Overview of the main GSM PCB
The Diagram below shows the key connection points on the GSM
Intercom PCB.
Relay 2
- +
1 2
NO COM NC
2
INPUTS
Output 2
Output 1
Output 1
Gate or Door
Control when
using
Open Access
Relay 1
NO COM NC
P N
DC 12V
Power In
Power to
Side
Light
PCBs
Micro
SIM
Holder
Antenna
DC 12V
Power In
