The KD Series REPEAT CYCLE Timer produces an output which alternates between an activatedand deactivated state at a repetitive rate. The first cycle begins when input voltage is applied to thetimer. During this period the output is deactivated. At the end of the first delay or OFF period, theoutput energizes and the second or ON period begins. When the second delay period ends, theoutput deactivates and the OFF period repeats.This ONOFF sequence cycles continuously while input voltage is present. When input voltage isremoved, the output deactivates and the timer resets. The KD5 Series REPEAT CYCLE timer iscontrolled by a single timing resistor and provides equal OFF and ON times. The KD6 Series iscontrolled by two separate timing resistors and produces two independent OFF and ON times.