The UTC KTD-405U keyboard combines the best of the previous keyboards for CCTV systems, allowing control of Digiplex® multiplexers and arrays from the same unit. From these keyboards you can operate in one of these three modes: Discrete Zone, Transparent Zone and Digiplex. In the Discrete Zone and Transparent Zone modes, the system can be divided into 32 zones with up to 64 cameras in each zone. Multiplexers and matrices can be used. In Digiplex mode, an array is the primary device of the system. A combined RS422 / RS485 communications port makes it possible for KTD-405U keyboards to work with multiplexers and CyberDomos; select and switch video; Start camera tours and select monitors. From the keyboard we can program multiplexers, CyberDomos, CyberScout, matrices and alarm interfaces.