The Harloff Field-Installed Kit for EKC Cassette Carts provides a specialized electronic keyless access retrofit package engineered for mobile medication cassette carts. Designed specifically to update and replace legacy 41032 lock assemblies, this field-installed retrofit kit allows biomedical technicians and facility maintenance staff to upgrade cart security directly on nursing units without taking equipment out of service. The kit incorporates an advanced Electronic Keyless Controller (EKC) assembly that eliminates physical master key management while supplying programmable PIN code authorization, administrative access control, and auto-relocking security features. Built to maintain strict pharmacy control over patient-specific medication cassettes and controlled substance storage, this retrofit solution extends the service life of existing Harloff cassette cart fleets while bringing access protocols up to modern healthcare security standards.