TDL Series Flasher Relay Output from the ATC Diversified Electronics Division from Marsh Bellofram Corporation. When power is applied to the input, 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 one cycle is complete. This OFF/ON cycling continues until the voltage is removed from the input. The OFF time always equals the ON time.
