The RDAC X is the Engine monitor module used with Ultra, Enigma, Odyssey and Voyager instruments. Available in two versions, the RDAC XB is the base version and the RDAC XD adds a precise silicon manifold pressure sender (usuable for any pressure in the 0 to 2.5 Bar (30psi) range (non aggressive gases or liquids only). The RDAC X provides up to 12 channels for thermocouple sensors (EGT,CHT), channels dedicated to NTC temperature probes, oil and fuel pressure, fuel levels, fuel flow and RPM, manifold or boost pressure (RDAC XD, RDAC XE only)