| | PSS 21H-8A1 B3 | Remote Terminal Unit (RTU) 50 SCADA RTU Architecture | 0613 | 12 | 755 KB |
| | PSS 21H-8A8 B4 | Remote Terminal Unit (RTU) RTU50 Power Supply Module | 0510 | 8 | 337 KB |
| | PSS 21H-8C1 B4 | I/A Series Remote Terminal Unit (RTU) RTU50 P3E/P30E Master Processor Module | 1011 | 8 | 1.0 MB |
| | PSS 21H-8C4 B4 | Remote Terminal Unit (RTU) RTU 50 12 Channel Serial Module | 0500 | 8 | 1.6 MB |
| | PSS 21H-8C6 B4 | Remote Terminal Unit (RTU) RTU 50 Input/Output Modules | 0910 | 20 | 2.7 MB |
| | PSS 21H-8C7 B4 | Remote Terminal Unit (RTU) RTU50 Eight Channel Serial Card | 0910 | 4 | 593 KB |
| | PSS 21H-8D2 B4 | I/A Series Intelligent SCADA Communications Line Server (CLS 50) | 0910 | 12 | 991 KB |