If you have a professional home theatre installation, some accessories may be required or can enhance your experience. Projector accessories include 3D glasses, wireless transmitters, and hideaway boxes. 3D glasses are only compatible with certain projectors that have 3D capabilities; models include DLP linked and radio frequency. The Optoma HDCast pro wireless transmitter is designed for streaming video and audio directly to your projector. It connects to your projector via an HDMI cable, allowing you to stream content directly to the device from a computer while maintaining HD 1080p quality. Projector screen hideaway boxes are compatible with Grandview motorised projector screens. Once installed, they allow the screen to retract fully into the ceiling, becoming completely invisible.