Hardware Control

Brand	Link	Model	Note
Crestron	Crestron CP4N	CP4N	can accept and send:  RS-232  IP strings: server heartbeats, video matrix switching, etc  Contact closures: fire alarms, audio amplifiers, etc
	Crestron Touch Screen	Touch screen	usually one in the rack room, sometimes a second one in the space
Q-Sys	QSC Q-Sys