There are many other features, bells and whistles that vary from camera to camera. This can simply be the monitor on the telemedicine unit. A regular TV could be used with significant resolution loss, or one can purchase a true high resolution RGB monitor. Typically these are 600 line, RGB monitors. Both Olympus and Sony make good ones.
Price depends on screen size.
All camera price estimates include power supply and auto iris function. Prices do not include camera mount adapters, microscopes or monitors. All cameras listed are Sony. The following statements represent some simplification of the current technology, and are intended as a general guide. This is the optimal system for highest possible resolution.