In the early 1960s, as electronic technology advanced,
alarm systems and video were introduced. Radio Corporation
of America (RCA), Motorola, and General Electric
were the pioneering companies that began manufacturing
vacuum-tube television cameras for the security industry.
The use of video cameras during the 1960s and 1970s grew
rapidly because of increased reliability, lower cost, and
technological improvements in the tube-type camera technology.
In the 1980s growth continued at a more modest
level with further improvements in functions and availability
of other accessories for video security systems.