Clear-Com – CZ-DX410-4UP DX410 Belt Pack System on May 8, 2017 | Marketing Team The DX410 is a newly designed two-channel digital wireless system, operating in the 2.4GHz band, that delivers an overall better experience in performance, range and sound. The system features 7kHz wideband audio, 2-wire and 4-wire bridging, and 2-wire auto-nulling for fast integration with Clear-Com or TW wired partyline systems.