Honeywell | 51201815-100 | Controller Memory BackupDescription The Honeywell 51201815 100 Controller Memory Backup module is designed for Experion PKS systems. It enables both backup and recovery of program data for S8 C300 controllers, ensuring system integrity during power loss or controller failure. Specifications Model: 51201815 100 Manufacturer: Honeywell Product Type: Controller Memory Backup (RAM Charger Assembly) Application: S8 C300 Controllers Supported Units: Up to 4 physical controllers