Voltage is continuously applied to the input. An external isolated switch controls the timer. When closed (momentary or maintained), the OFF time begins. Upon completion of the OFF time, the relay energizes and the ON time begins. Upon completion of the ON time, the relay de-energizes and the cycle is complete. Reset is accomplished by reclosing the control switch after the timing cycle has completed. The OFF/ON time periods are independently adjustable.TDI Series Delayed Single Shot Relay Output
