The ZK1200-DH is a specialized single-door access controller board, frequently utilized in standalone or PC-integrated security systems. Unlike basic relay boards, the ZK1200-DH supports advanced features like Weigand interface readers , door contact monitoring , and request-to-exit (REX) sensors .
Below is a breakdown of its wiring diagram, terminal functions, and common connection pitfalls. The board is typically divided into six functional zones. Refer to the silkscreen labels when wiring: