These products are used to send video and audio signals from any analog video source. They are mainly used with security cameras but can also send video and audio wirelessly from camcorders, TV's and other devices with a composite video out. They eliminate the need to run cables from a cameras
location back to a monitor or recording device but they do require power at the
cameras location. Batteries can be used for short term operation of a few hours
but for continuous use a power outlet is recommended.
