Step 1. Answer the questions below regarding your upgrade needs
| Need all 16 logic inputs? | |
| Need Setpoint Access contact input? | |
| Need a mix of wet and dry contact inputs? | |
| Need two RS485 ports? | |
| Need RS485 baud rate 4800bps or lower? | |
| Need RS422 communications? | |
| Need Solid State Output Relay? | |
| If power supply is HI - volt AC, need less than 88VAC? | |
| If power supply is LO - volt, is AC voltage required ? | |