ZK-SW400DC including one control box and two swing arm which suitable used in one channal（width 4~7） with
two doors，it mean one swing arm support one 2-3.5m width door with 400kg.

Multi-function
• External alarm lights, infrared devices and other safety equipment.
• Access control system can be connected to realize automatic identication and access control.
• The door can be opened independently on one side or simultaneously in both directions.