2 reader module for Expert® range. RS485 connectivity. For use in conjunction with the EXpert² master controllers. Allows great flexibility in system design and control. Max Cards 48,000. Readers: Maximum of 4 using the majority of reader, keypad and biometric technologies including TDSi EXprox, Optica and those with standard clock & data, 26-bit Wiegand and HID standard 37-bit (H10302) output formats. For IR technology only compatible with TDSi Digital Infrared readers. Up to 2 Doors. Communications: RS-232, RS-485, Ethernet (TCP/IP). Use in conjunction with EXgarde™ PRO to provide a complete, fully configured access control solution.