The CP-2500 control panel is available for discrete control of the NGT-1000/2000/2500 models when paired with a non-compatible transponder. The CP-2500 features a “push to sync” function that alerts pilots when there is a miscompare to the legacy transponder squawk code and the Lynx control panel. A simple push of the dual-concentric knob synchronizes the Lynx system to the transponder’s squawk code.