Abstract: An improved load control apparatus for use in a two wire installation in which interconnection of the two wires is effective to energize a series connected load such as a light bulb, and including a power supply for developing a power supply potential and 60-Hz clocking pulses from energy obtained from the two wires, a coupler responsive to a command signal for alternately substantially preventing and permitting a light bulb energizing current to flow between the two wires and in both states for permitting energization of the power supply and a control logic energized by the power supply potential for counting the clocking pulses and for developing at preset times the coupler command signal whereby the switching apparatus in a first mode reduces energy consumption by turning off a light left on after business hours and, in a second mode by cycling a light in a predetermined pattern to discourage burglaries.