The dual-function, fully configurable SD230 FLEX replaces variations of SD200 Series units, simplifying customer inventory requirements. Users can quickly and easily change the configuration to any dual-channel detector function via DIP switch settings. When configured for double shell/missing tab, the infeed (shell) outputs energize for single end, double end and fault conditions. The system also features new multi-color LEDS for a more intuitive status notification along with dual three-digit LED displays that report relative thickness, probe signal strength, and diagnostic fault conditions.