Hardware Installation Guide
revision 7 — 445
Reader power: Voltage 12 VDC +/-10% (optional 5 VDC +/-5% jumper selectable, current 400 mA
maximum to 50°C, derate to 300 mA for 70°C)
DDC reader wiring
88.5 Open Supervised Device Protocol
Open Supervised Device Protocol (OSDP) uses bi-directional communications between readers and the
reader interface, providing constant monitoring of reader health, improved control of reader operation and
configuration in real-time, and additional communications capabilities over a single connection, including
LCD reader display control. For OSDP, set the baud rate to 9600 bps.
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