EC-200 is a 16-layer main control board, which can be connected with three expansion boards at most. The expansion boards are divided into 16-layer and 8-layer. It can control up to 64 floors to meet the needs of most customers. This product can run offline and independently, as well as obtain personnel information online. Two modes can be set by double relay control, one is to swipe the card directly to the floor and the other is to swipe the card manually to select the floor. Machine hardware interface and rich functions (fire port, manual port, RS485 reader port, TCP/IP communication port, etc.) to meet the needs of users in different application scenarios.