| SPEC | SHDDC-E1 | SHDDC-E2 |
| Power | 24V AC/DC (DC Min 1.0A) | 24V AC/DC (DC Min 1.0A) |
| MCU | 32bit RISC | 32bit RISC |
| Comm. | 1ch RS-485 | 1ch RS-485 |
| DI | 8points (24V DC Source) | 2points (24V DC Source) |
| DO | 8points (Relay Dry Contact) | 2points (Relay Dry Contact) |
| SSR | 1points (24V DC) | 1points (24V DC) |
| AI | 2ch (PT100 / 0-10V / 0-20mA) | 2ch (PT100 / 0-10V / 0-20mA) |
| AO | 2ch (0-10V / 0-20mA) | 2ch (0-10V / 0-20mA) |