The Comnet FVT/FVR1021 series video transmitter/receiver and data transmitter/receiver supports the simultaneous transmission of short-haul quality 10-bit digitally encoded video and return data over one multimode or singlemode optical fiber. This module is universally compatible with major CCTV camera manufacturers and supports RS-232 and RS-422 data interfaces. The FVT/FVR1021 allows the user to set the data through a switch on the unit.