Title: Hardware Installation Guide.pdf
All readers that have a buzzer will beep during pre-alarm when in extended held open mode. This includes primary and alternate readers. If the reader has two-wire LED control, this feature is disabled. The reader starts beeping at pre-alarm time and continues to do so until the door is closed or the held open time is hit.80.1.5Open Supervised Device ProtocolOpen 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 biometric template download and LCD reader display control.Wiring for OSDP readersPwr + (150mA Max)VO LED – not connected BZR – not connected CLK/D1 DAT/D0 GNDTR+ TR- SIGNAL GROUNDOSDP DEVICEREADER PORT80.1.6Unsupervised Alarm Inputs: Power Fault and Cabinet Tamper Monitors