The NetMedla MOIXAMP (Scm1. Scm2, Scm3> self contained camera and modulator converts its video signal to a selected television channel. It is powered over the same coax cable that returns the video broadcast signal for One Wire Video'" installation. It mounts to a typical round 4 inch junction box and is viewed with a television tuner.Other junction boxes from your local hardware store may also be used after replacing the round base with another that has a 1/2 inch diameter hole for the elbow bracket. Equipment that does not have a tuner, such as a security monitor, Quad display, or DVB. will require a demodulator (any TV tuner device with a composite video output such as a VCB) to convert the video for its use.