The NetMedla MODCAM Is a self contained camera and modulator that converts the video signal to a selected television channel. It is powered over the same coax cable that (etums the video broadcast signal (or One Wiie Video'" installation. H mounts toa typical round 4 inch junction box and Is viewed with a television tuner. Other (unction boxes from youi local hardware store may aho be used after leplaclng the round base with another that has a 1/2 inch diameter hole foi the elbow bracket. Equipment that does not have a tuner,such asa security monitor,Quaddlsplay.orDVR, will requlrea demodulator (any TV tuner device with a composite video output such as a VCR) to convert the video lor its use.