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GSM SMS Alarm Messenger
SMSPro (Version 7)
9
Relay Output jumper
1 2 3
1-2 Short
Normal Close
2-3 Short
Normal Open (Default)
6.
Schematic Diagram
The relay on/off start up status is
determined by the jumper setting.
The relay will resume its start up status
when power is off.
POW
Power Input, DC7~12V
GND
Power
Ground
5VDC
Power Output, DC5V [power supply for external sensor]