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About the development board
Main connector pin orientation
Power jack (P17)
The Power Jack is a barrel connector that accepts 9 to 30 VDC +/- 5%. The jack is labeled P17. The
following table shows the polarity of the power jack.
The following figure schematically represents the polarity of the power jack.
Digi Connect EM and Digi Connect Wi-EM Hardware Reference
Power jack polarity
Contact
Polarity
Center
+9 to +30 VDC
Outer
Ground
Power jack (P17)
24
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