It is a standard for using DC voltages from zero to 10V to control lighting devices. This used to be a very common control method. It has been superceded in parts of the entertainment lighting market by DMX512 and other digital protocols, but a significant portion of the entertainment industry still makes, sells, and uses 0-10V equipment. It is particularly important in the custom market on projects where specifiers want a simple and easy to trouble-shoot protocol. The standard's consensus-based specifications for the electrical characteristics of the analog signal, transmitters, and receivers help simplify the specification, design, and supply of analog control equipment.
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