According to DEA physical-security regulations (21 CFR 1301.72(a)), Schedule I and II controlled substances must be stored in a safe, steel cabinet, or vault — a wire cage alone does not satisfy the rule; cages become an approved storage option only for Schedule III, IV, and V substances under 1301.72(b). Reynolds Business Systems' specialty carousel storage systems for pharmacy and controlled-substance applications are built around that distinction, combining vault integration, biometric and dual-factor access, and complete transaction logging so Schedule II–V inventory stays within an auditable chain of custody. The same automated platform extends to cold-chain applications: Reynolds' carousel systems for blood banks, vaccines, and biologics maintain a stated -20°C to +8°C range with a 72-hour battery backup for continuous operation during power events. Reynolds Business Systems brings 55+ years of experience and more than 3,000 completed projects to these installations, serving pharmacy directors, laboratory managers, and controlled-substance managers across Pennsylvania, New Jersey, Delaware, and Maryland. Prepared by Reynolds Business Systems' document-solutions specialists, serving Pennsylvania's Lehigh Valley since 1970; reviewed July 2026.