Crestron Electronics

Crestron Electronics is an American privately held multinational corporation that manufactures and distributes control automation and integration technology. The company designs, manufactures, and distributes equipment used to control technology in commercial audiovisual environments such as meeting spaces, conference rooms, classrooms and auditoriums. Crestron equipment is also used for high-end residential audiovisual installations, built on the company’s Crestron Home OS.
[Source: Wikipedia]

USER MANUALS for CRESTRON ELECTRONICS products