What Is an IR Emitter Cable Used For?


IR emitter cables are wired transmitters that broadcast infrared (IR) signals and commands from a remote to an external audio or video device. These cables can be used to control a stereo system's volume remotely or to share a Blu-ray player's display with screens in separate rooms. The device allows users to tuck their stereo, entertainment system or Blu-ray player away in a closet or cabinet, clearing clutter and hiding hook-ups.

IR emitter cables are primary components of IR repeater systems. These systems utilize near-infrared light, which is just below the visible spectrum, to allow users to control external or hidden devices with a single remote control. IR receivers are small devices that are placed within unobstructed range of a remote control and are the only visible component of the IR repeater system. These devices receive the input from the remote, amplify it and transfer it through Cat-type cabling to a hidden connection block. At the other end of the connection block are the IR emitter cables, which receive the remote command and broadcast the input to wireless audio and video devices.

IR emitter cables come in one of two transmission variations: blink or blast style. Blink-style emitters transmit data to a single external source, while blast-style emitters broadcast to several component sources at once. Blast-style emitters are particularly useful when space is an issue but are typically not as reliable. Blink-style emitters are the more common of the two and generally are a more effective transmission method.