There are a number of wireless cameras available on the market. Many will allow you to record onto a DVR or a VCR so that you can view the tape when you get home from work. Many of these have sound recording so that it will record as well. TRANSMITTER, to a RECEIVER which is connected to whatever you use to record or monitor the cameras view. They are used in applications where it is DIFFICULT or IMPRACTICAL to run a video cable.

The battery operated types are often used for short term or temporary applications.

IN, or it could be a separate transmitter and receiver set called a VIDEO LINK. Although transmitting through a hedge may WEAKEN the transmitted signal, most good quality wireless camera systems, are robust enough, to still produce a good signal.

Frequently some EXPERIMENTATION with the placement of the camera and receiver will be required for best signal strength, provided you are not trying to transmit too great a distance. Are you looking for easiest or least expensive. You can also buy wireless security camera. The only obstacle with the camera would be power.