| PLC Model | Size (mm) | Inputs | Relay Outputs | Transistor Outputs | High-Speed Inputs | High-Speed Outputs | AD/DA |
|---|---|---|---|---|---|---|---|
| LK3U-14MR | 117*125*56 | 8 | 6 | / | 2 | / | 4/2 |
| LK3U-14MT | 117*125*56 | 8 | / | 6 | 2 | 4 | 4/2 |
| LK3U-14MRT | 117*125*56 | 8 | 2 | 4 | 2 | 4 | 4/2 |
| LK3U-20MR | 11712556 | 12 | 8 | / | 2 | / | 4/2 |
| LK3U-20MT | 117*125*56 | 12 | / | 8 | 2 | 4 | 4/2 |
| LK3U-20MRT | 117*125*56 | 12 | 4 | 4 | 2 | 4 | 4/2 |
| LK3U-24MR | 117*125*56 | 12 | 12 | / | 2 | / | 6/2 |
| LK3U-24MT | 117*125*56 | 12 | / | 12 | 2 | 4 | 6/2 |
| LK3U-24MRT | 117*125*56 | 12 | 8 | 4 | 2 | 4 | 6/2 |
| LK3U-32MR | 162*125*56 | 16 | 16 | / | 2 | / | 10/2 |
| LK3U-32MT | 162*125*56 | 16 | / | 16 | 2 | 8 | 10/2 |
| LK3U-32MRT | 162*125*56 | 16 | 8 | 8 | 2 | 8 | 10/2 |
| LK3U-48MR | 199*125*56 | 24 | 24 | / | 2 | / | 10/2 |
| LK3U-48MT | 199*125*56 | 24 | / | 24 | 2 | 8 | 10/2 |
| LK3U-48MRT | 199*125*56 | 24 | 16 | 8 | 2 | 8 | 10/2 |
| LK3U-64MR | 250*125*56 | 32 | 32 | / | 2 | / | 10/2 |
| LK3U-64MT | 250*125*56 | 32 | / | 32 | 2 | 8 | 10/2 |
| LK3U-64MRT | 250*125*56 | 32 | 24 | 8 | 2 | 8 | 10/2 |
| LK3U-80MR | 307*125*56 | 40 | 40 | / | 2 | / | 10/2 |
| LK3U-80MT | 307*125*56 | 40 | / | 40 | 2 | 8 | 10/2 |
| LK3U-80MRT | 307*125*56 | 40 | 32 | 8 | 2 | 8 | 10/2 |