TIME ON ADJUSTABLE from 1 sec to 60 hours (on order modifications can be made). OFF TIME ADJUSTABLE FROM 1 sec To 60 hours (upon request modifications can be made). The two timers are independent of each other, ie the ON time can be set for hours while the OFF time can be set for seconds. It is possible to schedule the cycle to repeat or not (ON-OFF-ON-OFF etc.). There is a preset time for greater accuracy (time basis). Possibility for remote control with external buttons.