The TSL Series Flasher Solid-State Output Timer from the ATC Diversified Electronics division of Marsh Bellofram offers reliability and performance. When power is applied, the OFF time begins. Upon completion of the OFF time, the load energizes and the ON time begins. Upon completion of the ON time, the load de-energizes and one cycle is complete. This OFF/ON cycling continues until the voltage is removed. The OFF time always equals the ON time.