Cassette rectangular appearance, made of alloy steel, helical screw works, the biggest advantage is the low noise two doors can be automatically recovered, international, domestic initiative, fashionable, elegant, easy to use, flexible, reliable, Durable anti-theft protection. Projector to your company provides personal protection and excellent service. When the projector is not in use, the collection in the chassis, and the door is closed, so that the projector is well protected, and has anti-theft feature. When using the projector to automatically open the compartment door, projector projecting out from the box, for use. After use, the box can make it up to retract automatically close the door. All actions by electrical, mechanical complete. Precise movements, flexibility, despite the user to manipulate the command. With manual, remote and centralized control (RS232) function.