9
Access Control Panel Connections
Gateway
Connector
Gateway Access control
panel signal
Description
Power
+
12 or 24 VDC
• Gateway inputs for 12 or 24 VDC power.
• Draws 250mA max.
• If the Access Control Panel (ACP) reader
power outputs do not source enough current
for the Gateway, use the ACP main regulated
12 VDC power supply or a separate UL294
Listed 12 or 24 VDC power-limited power
supply.
• Power input is non polarized.
–
DC Ground
RS485
Rx –
– Receive Data
• 4-Wire or 2-Wire bi-directional RS485
communication port for interface to Access
Control Panels.
• 2-Wire installation: Both 2|4 wire jumpers
should be added.
• 4 -Wire installation: Both 2|4 wire jumpers
should be removed.
• Refer to following pages for typical wiring
diagrams.
Tx –
– Transmit Data
Rx +
+ Receive Data
Tx +
+ Transmit Data
GND
Signal Ground
