Additional extension power and video cable all in one cctv kitr key featuresr r 100 ft cable r siamese typer bnc videopowerr bnc mm coupler includedr r the sea c101 not only connects your cameras to your dvr it also serves as a power source making installation that much easier the included connector allows you to extend your cable up to 300 feet without losing signal r siamese type cabler this 100 foot siamese type bnc cable simplfies camera installation by combining video and power in a s