This manual primarily describes precautions required in installing and wiring the timer.

How to change time unit and rated time
The desired time unit(SEC, MIN, HRS)can be displayed in the window below the time setting knobs by turning the time unit selector located at the lower right corner of the front panel. Dial digits appear in the six windows around the time setting knobs according to the rated time selected by turning the rated time selector located at the lower left corner of the front panel.