Produced for use with video cameras and accessories, power supplies fit in 19 in. EIA rack and provide options such as dual-output 24 Vac/28 Vac or single-output 24 Vac and 12 Vdc. All models have output distributed via 16 or 32 individually protected circuits. With flip of switch, voltage is converted in banks of 8 circuits, allowing voltage drop encountered by long-wire runs to be accommodated for cameras that require it without impacting closer cameras with excessive voltage.