2 reader slave controller with 3A PSU. RS485 connectivity. For use in conjunction with the EXpert2 master controllers allowing great flexibility in system design and control. Built in 12Vdc 3Amp power supply unit. Housed in a robust metal enclosure. Space available for optional expander slave or I/O module. Dimensions 390 x 410 x 90 mm. 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. Use in conjunction with EXgarde™ PRO to provide a complete, fully configured access control solution.