at500-k35 intelligent key management system can realize automatic completion of all unlocking key use records and assure the use management of unlocking tools (keys) by technical means. at500-k35 intelligent key management system can accurately log the applicant, approver, reason for unlocking, key removal and return, and other records. at500-k35 intelligent key management system can realize remote authorization of the application for use of the fail-safe key, thus raising the efficiency of the processes involving key application, approval and use, improving the management of substation unlocking keys, significantly raising work efficiency and laying a foundation for prevention of substation misoperation accidents and realization of safe and stable operation.