| 구분 | SHDDC-M1 | SHDDC-M2 |
| 입력전원 | 24V AC/DC (DC기준 최소 1.0A) | 24V AC/DC (DC기준 최소 1.0A) |
| MCU | 32bit RISC | 32bit RISC Processor |
| RTC | 내장 | 내장 |
| 통신 | 4ch RS-485 (Master/Slave) / Micro USB (PC) | 4ch RS-485 (Master/Slave) / Micro USB (PC) |
| 조작부 | FIND 4 digit / Tact s/w 4EA | FIND 4 digit / Tact s/w 4EA) |
| DI | 16points (24V DC Source) | 16points (24V DC Source) |
| DO | 16points (Relay Dry Contact) | 16points (Relay Dry Contact) |
| SSR | 1points (24V DC) | 1points (24V DC) |
| AI | 7ch (PT100 / 0-10V / 0-20mA) 1ch (0-10V / 0-20mA) 1ch (CT) |
5ch (써미스터 / 0-10V / 0-20mA) 2ch (PT100 / 0-10V / 0-20mA) 1ch (0-10V / 0-20mA) 1ch (CT) |
| AO | 4ch (0-10V / 0-20mA) | 4ch (0-10V / 0-20mA) |