At last count I probably bought 6 units of DROK. More specific instructions would have been helpful, but I struggled through by pressing the buttons as it took me 0.01 seconds, a single shot, and finally got it done. I use mine to sync a spot weld relay to a foot pedal. Impossible without a single shot timer that fires faster than a human can press the momentary switch. I bought an identical unit from another Revain supplier. They are of the same quality. The link below is easier to navigate for various time lags. .This PDF file makes it easy to program any manufacturer's device.
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