Polygon Technologies Micro Commander GC0101 User Manual page 11

Please keep in mind that this input is designed for 3V to 20V operation. If you require to connect a
voltage above 20V to these terminals, you should connect a resistor in series with the input, as
shown below.
Input Voltage range Required Series resistor:
20V – 40V DC 1K ohm
The + and – terminals are connected to the input power supply of the Micro Commander, and are
provided to make it easy to connect dry contacts to the Micro Commander.
If the power supply is 14V, the voltage at the + and – terminals will be slightly less at about 13.8V
(due to an internal series diode for reverse polarity protection).
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Page 11