User's Manual

CDR-915L OEM DATA RADIO MODULE
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Revision M INTEGRATOR’S GUIDE
19
DB-9 Pin Out (RS-485)
PIN 1 – Unused
PIN 2 – Unused
PIN 3 – Unused
PIN 4 – Unused
PIN 5 – GND (Ground) is the interface common.
PIN 6 – Unused
PIN 7 – RS-485-
PIN 8 – Unused
PIN 9 – RS-485+
Power Connector Pin Out
The power connector should receive 9-15 VDC at 300mA. The 2.5mm x 5.5mm jack is center positive.