1. Slim design, security, and stability, low power consumption. 2. Designed with the open frame type and mount board, easy to install. 3. Connected to a stable power supply, the central slug will be drawn and open when it’s energized. And when it is not energized, the slug will stick out and close. It doesn’t use any power in this state. 4. Suitable for doors, file cabinets, display cabinets, lockers, drawers, etc.