Tank Vehicle mounted control unit displays overfill prevention, retained product, and fault condition status for safe loading and ease of troubleshooting. The only system kit in the industry that includes a 5-year sensor warranty. Enhanced programming and diagnostics for quick installation and troubleshooting. Features Dynacheck®, automatic and continuous self-checking circuitry for fail-safe operation. Upon detection of a static condition, the IntelliCheck® 3 system shuts down its outputs and ceases loading operation. Retained Product Monitoring feature helps prevent product mixing and requires driver acknowledgment of retained product before loading can occur.