TCP/IP 1-Door Access Control PCB Module Wiegand 26 /32/34 (HID, EM, Mifare, TI, ... is now capable to handle 4 doors / 4 readers with a single controller.Y.LINK Series Access Controllers fits any ... . Each controller works independently and keeps its own database.Visual LEDS (Four lights: Red, Green, Blue, Orange) indicate the inputs, ... map, Tele control. TCP/IP 1-Door Access Control PCB Module Y.Link01