Omron - Automation & Safety Programmable Relays
| Programmable Relays |
ZEN-10C |
ZEN-20C |
| 
| |
| Type | CPU Unit | CPU Unit |
| Features C1 | With LCD Display, program/control buttons, calendar and real-time clock | With LCD Display, program/control buttons, calendar and real-time clock |
| Features C2 | With LED indication, Logic control, Programming by software | With LED indication, Logic control, Programming by software |
| Features C3 | Same as C1 but not expandable | Same as C1 but not expandable |
| Features C4 | Same as C1 but instead of one output relay you get RS-485 communication | N/A |
| Features Starter Kits | Complete set with C1 CPU including software + cable + manual | N/A |
| Number of I/O Points | 10 expandable up to 34 I/O (C4 up to 33 I/O) | 20 expandable up to 44 I/O |
| Inputs | 6 | 12 |
| Inputs/Power Supply | 100 to 240 VAC or 12 to 24 VDC | 100 to 240 VAC or 12 to 24 VDC |
| Outputs | 4 relays (C4 = 3 relays) or 4 transistors | 8 relays or 8 transistors |