| Blue | Blue LED Displays |
| Clear | Clear Anodized Front Panel |
| DC | DC Operation: Requires the unit to be powered from a DC source exclusively, typically +12 to +35 VDC. |
| ESE | ESE Time Code Output: An ESE Time Code output is provided allowing the unit to drive ESE Time Code Slaves. |
| J | 220 VAC/50 Hz Operation: The unit is configured to operate from 220 VAC line voltage. 117 VAC 50/60 Hz is standard. |
| Q | Console Mount: The unit is housed in an enclosure 8" deep, front panel is 3.5" x 9", 1/8" clear anodized aluminum.(Available on the LX-270U/6) |
| Red | Red LED Displays |
| RS | RS-232C (or RS-422, if specified) Output: Computer Interface allows the time code data to be shared with a computer. (Available on the ES-271U/9) |
| UL | "UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply. |