| Part Number | Description |
| 7 inputs / 8 outputs, RS-232C Output | |
| 7 inputs / 8 outputs, RS-485 Output | |
| 15 inputs or outputs, RS-232C Output | |
| 15 inputs or outputs, RS-485 Output | |
| 24 inputs or outputs, user selected RS-232C or RS-485 Output | |
| 64 inputs or outputs, user selected RS-232C or RS-485 Output |
| Part Number | Type | Range | Supply Voltage | Optional Features |
| Input | 90 to 140VAC/DC | 24V | Standard | |
| Input | 180 to 280VAC/DC | 24V | High voltage versions (280VAC for AC modules) | |
| Input | 90 to 140VAC/DC | 5V | Standard | |
| Input | 180 to 240VAC/DC | 5V | High voltage versions (280VAC for AC modules) | |
| Input | 18 to 36VAC/DC | 5V | Low voltage 10VAC input for AC modules | |
| Input | 3.3 to 32VDC | 24V | Standard | |
| Input | 3.3 to 32VDC | 5V | Standard | |
| Input | 4.0 to 32VDC | 5V | Fast-switching version of DC modules | |
| Input | 10 to 60VDC | 5V | Enhanced noise immunity version of DC modules |