A UTF (Up the FiberTM) transmitter (TX) converts a composite video signal into a high-quality, 9-bit digitized optical equivalent and transmits this over
optical fiber. Additionally, the transmitter provides a voltage-free alarm contact (normally open) for e.g. door contacts, anti-tamper contacts etc.
Complementary UTF receivers (RX) will receive and convert the optical signal to video/contact closure. TX and RX models operate over one single-mode optical fiber. TX-2 and RX-2 models are dual units, operating over two single-mode optical fibers. All models use one transmission wavelength (1310 nm).

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