Pliant Technologies CCU-22 CrewCom 2+2 Control UnitThe CCU 22 CrewCom 2+2 Control Unit from Pliant Technologies establishes the CrewNet based infrastructure while also providing external connections to common established intercom systems. By design, the CU contains no radio and is frequency agnostic and can therefore control and monitor any device across CrewNet regardless of radio frequency bands being utilized. With the combination of CrewCom Radio Transceivers, each CU supports up to 50 Radio