A method for connecting at least one AC device, selected from a group comprising a relay, a semiconductor relay (6M or 6MIR), an AC outlet (4SM or 4SMIR), an AC current sensor and combinations thereof including at least one of a processing circuit and a current sensing circuit packaged in a case sized for installation into a standard electrical wall box with at least one of standard AC switch and AC outlet, with at least one controller selected from a group comprising an home automation controller, an home automation control distributor, a video interphone monitor, a shopping terminal, an optical driver, an optical repeater, a command converter, a current data receiver, a keypad and combinations thereof via an optical medium comprising at least one of an IR link adjustable into a line of sight and at least one optical cable selected from a group comprising a fiber optic, a light guide and a combination thereof; said controller including at least one of a first optical transmitter and a first optical receiver, said AC device including at least one of a second optical receiver and a second optical transmitter, each said receiver and each said transmitter is structured with a receiving surface and an emitting surface respectively for enabling the attachment of two terminated ends of said at least one optical cable, each said AC device and said controller including at least one holder for holding at least one said terminated end attached to said surface, said method comprising the steps of: a. terminating a first optical cable at its both ends by sharp cuts; b. attaching the two terminated ends of said first optical cable to two of said surfaces for connecting one of said first transmitter with said second receiver and said first receiver with said second transmitter; c. securing said two terminated ends into position by said holder of said AC device and said holder of said controller; d. connecting a load to said AC device via one of said standard AC outlet and AC switch; e. connecting AC power to said AC device and installing the AC device into said standard electrical box; and f. propagating via said optical cable one way optical signal comprising one of control commands from said controller to said AC device and update commands selected from a group comprising confirmation, statuses, current drain, data including combinations thereof from said AC device to said controller. a. terminating a first optical cable at its both ends by sharp cuts; b. attaching the two terminated ends of said first optical cable to two of said surfaces for connecting one of said first transmitter with said second receiver and said first receiver with said second transmitter; c. securing said two terminated ends into position by said holder of said AC device and said holder of said controller; d. connecting a load to said AC device via one of said standard AC outlet and AC switch; e. connecting AC power to said AC device and installing the AC device into said standard electrical box; and f. propagating via said optical cable one way optical signal comprising one of control commands from said controller to said AC device and update commands selected from a group comprising confirmation, statuses, current drain, data including combinations thereof from said AC device to said controller.