Extron releases contact closure control module
Extron Electronics has introduced the CTR 8, a control module that adds contact closure control to most RS-232 controllable Extron simple or scaling switchers.
The CTR 8 accepts up to eight contact closure inputs and converts them to SIS Simple Instruction Set serial commands that select the corresponding input on an Extron switcher. Video can be muted and un-muted by pressing a single switch in sequence, allowing the user to control the viewing of the presentation.
Each contact closure input features a +5 VDC output that can be used to light an LED to indicate the active switch.