A Silent Witness 12 volts DC to 7.2 volts DC adaptor Silent Witness 550.0092 for Sony camcorder. This Silent Witness 12 Vdc to 7.2 Vdc 550.0092 DC to DC adaptor is install on Sony modified CCDTRV108 camcorder install in Silent Witness V30 video box inside school buses. This Sony 12 Volts dc to 7.2 volts dc adaptor can also be use for many others mobile applications  where a 7.2 volts dc is require from a 12 volts dc source.The Sony 550.0092 dc to Dc adaptor is sold as you see on the photos.

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