... access control and alarm monitoring.Features Y.LINK01 is now capable to handle1 doors / 2 readers ... is programmable: operating mode (NO or NC), time zones, local reflex ... its own database.Visual LEDS (Four lights: Red, Green, Blue, ... door by initial card, Double Door Interlock, Intimidated password, Constant opening status setting, Anti-pass back, Electronic map, Tele control. TCP/IP 1-Door Access Control ...