| I/O Status LED | RS232 | ethernet | USB |
| Eight (8) | LM3008 | LM3008E | LM3008U |
| Sixteen (16) | LM3016 | LM3016E | LM3016U |
| Model | Description |
| LM3008 | Master Control Unit with 8 LEDs, RS232 Connection |
| LM3008E | Master Control Unit with 8 LEDs, ethernet Interface |
| LM3008U | Master Control Unit with 8 LEDs, USB Interface |
| LM3016 | Master Control Unit with 16 LEDs, RS232 Connection |
| LM3016E | Master Control Unit with 16 LEDs, ethernet Interface |
| LM3016U | Master Control Unit with 16 LEDs, USB Interface |