Kramer SL-1N

The SL−1 is a master room controller. It controls audio components, video components and other room facilities such as lights and screens.
2 Bidirectional RS–232 Ports — Control AV equipment such as projectors, LCD and PDP displays, power amplifiers, switchers and scalers.
3 Relay Contact Closure Ports — Conveniently control other room items related to the AV system such as raising and lowering drapes, the screen or the projector.
IR Control — 1 input (3.5mm) & 2 outputs (terminal blocks).
IR Learning Function — Learns commands from any IR remote.
1ite–CTRL software over the Ethernet port.
K–NET™ Control Channel — For connecting compatible user interfaces and supplying power and control data over a single cable.
USB Port — For uploading configuration file.
Flexible Control — Ethernet, K–NET™, IR sensor and external IR command