TCP/IP series access control includes SC-T681 single door bi-directional access controller, SC-T682 two-door bi-directional access controller and SC-T684 four-door uni-directional access controller. Adapting the latest ARM chipset technology, and dual core architecture, it provides faster speed, stronger function and expansibility. It mainly applies in frequency card identification, user data loading, information storage, door lock control, passage control, and linkage fire alarm interlock control. Each controller supports stand-alone running, and also supports running on-line or off-line via multi-node and trans-regional RS232/485, TCP/IP network communication. System can connect up to 2000 controllers.

◆ Standard Wiegand 26 card reader interface. With alarm input expansion interface.
◆ E-map can check the real-time running state of each system.
◆ 100, 000pcs card issuing capability & 100, 000pcs off-line record storage capability
◆ Multiple time range setting:
- Holiday setting in one year
- 15 time groups can be set for each door
◆ Multiple door state working methods:
   - Normally Open (N.O.); Normally Closed (N.C.)
   - First Card Open control
   - Sleeping mode control; safe state
◆  Support entry with user password
◆ Support password control via programming
- Entry with carddigit password
- Entry with multiple super password
 ◆ Support multi cards open at the same time
◆ Remote manually control for any door
◆ Strong defense zone control and alarm function; input & output linkage mode
◆ Trans-regional anti-follow and anti-passback detecting settings
◆ Limit the number of people in defense zone, and limit the direction route
◆ Multiple arming & disarming alarm modes, and emergency alarm functions
◆ Support off-line interlocking within board and trans-board interlocking. Support off-line linkage within board and trans-board linkage.
◆ Data can be kept more than 180 days when power-off.
Interface Features
Single Door:
2 groups of standard Wiegand26 card reader input port
1 group of standard door magnet state input port
1 group of exit request button input port
2 groups of alarm expansion input port
2 groups of outlet terminal (support 12VDC power output)
1 group of door lock control output
1 group of expansion output
Two-Door
4 groups of standard Wiegand26 card reader input port
2 groups of standard door magnet state input port
2 groups of exit request button input port
4 groups of alarm expansion input port
4 groups of outlet terminal (support 12VDC power output)
2 groups of door lock control output
2 groups of expansion output 
Four-Door
4 groups of standard Wiegand26 card reader input port
4 groups of standard door magnet state input port
4 groups of exit request button input port
8 groups of alarm expansion input port
8 groups of outlet terminal (support 12VDC power output)