| 3473 Products and Part Numbers |
| 24-bit Change-of-state Input Register —120 VAC |
3473-A1A |
| 24-bit Change-of-state Input Register — 48 VDC |
3473-A1B |
| 24-bit Change-of-state Input Register — 24 VDC |
3473-A1C |
| 24-bit Change-of-state Input Register — 12 VDC |
3473-A1D |
| 24-bit Change-of-state Input Register —Contact Input |
3473-A1E |