Abstract: Dual mode lighting fixture control systems are disclosed that can comprising a wireless device capable of generating control commands and wirelessly transmitting the control commands. A control unit is included that is arranged to receive the control commands and generate wireless fixture control signals and powerline light fixture control signals. A plurality of first light fixtures are included wherein at least some of the first light fixtures are arranged to receive the wireless fixture control signals. A plurality of second light fixtures are coupled to and arranged to receive control signals from a first powerline, wherein the control unit transmits the powerline light fixture control signals on the first powerline to said second light fixtures. In some embodiments, the wireless device can comprise a laptop computer or a cell phone.

Abstract: An overhead door object detection apparatus that is configured to be utilized with a retractable garage door leading into a garage to determine if there is an object in the downward path of the garage door and, if there is an object, to stop the downward movement of the garage door before it hits the object and reverse to an upward movement. The apparatus generally comprises a transmitter unit that is attached to the leading edge of the garage door to detect the object and a receiver unit that controls the movement of the garage door. The transmitter unit comprises a proximity sensor, a microprocessor, a tilt switch and a transmission source to transmit an object detection signal to the receiver unit. The receiver unit has a receiving device, a microprocessor and a door reversing mechanism that engages the door's standard safety reversing sensor.