... scratch-resistant, durable, blue background light. 4.Support professional access control, and one user, multi-users combination door open, ... control for different time zones and holidays.5.Support remote emergency door open or authorized door open. 6.Support ... TCP/IP(optional), USB(optional)Standard access control interfaceWEIGAND34,dry contact standard access output controlOpen door delay 1~255sLCD 128 ...