C | Crystal Time Base: A crystal reference is employed for those applications requiring independence from the line frequency. A trimming function is included for greater accuracy (2-3 seconds/week). |
D | Remote Control: This option consists of a connector wired to switches on a control plate via a six-foot cable. Extra cable available. |
J | 220 VAC/50 Hz Operation: The unit is configured to operate from 220 VAC line voltage. 117 VAC 50/60 Hz is standard. |
T | Tenths of Seconds: Tenths of Seconds LED Display added. |
UL | "UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply. |