ES-112UE / ES-124UE
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The ES-112UE (12 hour)/ES-124UE (24 hour) is a low-cost clock for applications not requiring GPS or temperature controlled stability. The ES-112UE/124UE uses the AC line-frequency as a time reference or, optionally, a quartz crystal timebase may be specified. a "Set/Select" toggle switch for setting is accessible on the rear of the case.