The ES-172U (12 hour)/ES-174U (24 hour) is a low-cost clock for applications not requiring GPS or temperature controlled stability. The ES-172U/174U uses the AC line-frequency as a time reference or, optionally, a quartz crystal timebase may be specified. Fast, Slow and Hold control inputs are accessible on the rear connector. Front-panel control switches are available as an option.
- Console mount case
- .4" Red LED Display
- 12 hour (ES-172U) or 24 hour (ES-174U) display
- 220-240 VAC (110-120 VAC is standard) & UL options available
- Product Options:
- J---220 VAC/50 Hz Operation: The unit is configured to operate from 220 VAC line voltage. 117 VAC 50/60 Hz is standard.
- UL"UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply.
- W3-Wire Power Cord: Recommended where static charges can occur. Standard on many units, otherwise a 2-wire cord is supplied.
- VDC Power: 12 VDC Power Input replaces 110 VAC.
- CCrystal 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).
- DRemote Control: This option consists of a connector wired to switches on a control plate via a six-foot cable. Extra cable available.
- MFront Mounted Switches: Front Mounted Push Button Switches - available only on select "70 Series" units.
