Step 1. Answer the questions below regarding your upgrade needs
| Wye or Delta | |
| Need Solid State Output Relay? | |
| Need all 8 DCmA outputs? | |
| Need all 14 Contact Inputs in addition to Setpoint Access? | |
| Need two 485 ports? | |
| Need without case? | |
| Need a mix of 5A & 1A for Phase & Ground/Neutral( P5-G1-S1 is OK) ? | |