The Master Unit 524 supports all standard access reader types:
The Master Unit 524 and connecting Door Unit support all standard access control readers using an RS485 and Wiegand data connection.
Supporting a modular design with RS485 communication between modules, the Master Unit 524 provides a scalable solution by simply adding additional Door Units. Up to 12 Door Units connect to a Master Unit 524 module with each supporting two reader connections for a total of 24 readers.
Networked together with a 10/100 Mbps Ethernet connection, multiple Master Units communicate in a cluster configuration providing for expansion and administration up to 96 readers.