This is a restartable timer which is activated when the push button switch is pressed. The timer will remain activated until the preset time duration. If the switch is pressed again, the timing cycle will restart again, regardless of the remaining time from the previous cycle. The circuit allows for two maximum timing durations: one from a few seconds to 5 minutes; and the second from a few seconds to 50 minutes. It includes a relay which can handle loads of up to 3A / 110V AC.