A plug-in device enclosing Ai (Artificial intelligent) and IoT (Internet of Things) and a method for linking AC wiring devices and AC loads via cascading optical grid for exchanging at least one of two way communication through the optical cascading grid, enabling to introduce and assign AC switches and AC outlets and link optically the entire electric device of a residential and commercial units and communicate the power consumed and the loads statuses, at all time, and limiting the WiFi communication to a single transmitter at the time, to ensure no error communication.

A plug-in device enclosing Ai (Artificial intelligent) and IoT (Internet of Things) and a method for linking AC wiring devices and AC loads via cascading optical grid for exchanging at least one of two way communication through the optical cascading grid, enabling to introduce and assign AC switches and AC outlets and link optically the entire electric device of a residential and commercial units and communicate the power consumed and the loads statuses, at all time, and limiting the WiFi communication to a single transmitter at the time, to ensure no error communication.

A method and apparatus for unlocking and remove at least one plug-in electrical or IoT device locked by two lock ramps included in two channel of ramps on two surfaces of the plug-in device engaging at least two reciprocal channel of ramps on two surfaces of a support box, by an insertable dual release bar attached to a pull cord or an handle of an hand tool for inserting two insertable bars between the channels of ramps and the reciprocal channels of ramps for unlock and pull to remove the plug-in device.

A method and apparatus for unlocking and remove at least one plug-in electrical or IoT device locked by two lock ramps included in two channel of ramps on two surfaces of the plug-in device engaging at least two reciprocal channel of ramps on two surfaces of a support box, by an insertable dual release bar attached to a pull cord or an handle of an hand tool for inserting two insertable bars between the channels of ramps and the reciprocal channels of ramps for unlock and pull to remove the plug-in device.

A method and apparatus for unlocking and remove at least one plug-in electrical or IoT device locked by two lock ramps included in two channel of ramps on two surfaces of the plug-in device engaging at least two reciprocal channel of ramps on two surfaces of a support box, by an insertable dual release bar attached to a pull cord or an handle of an hand tool for inserting two insertable bars between the channels of ramps and the reciprocal channels of ramps for unlock and pull to remove the plug-in device.

A method and apparatus for unlocking and remove at least one plug-in electrical or IoT device locked by two lock ramps included in two channel of ramps on two surfaces of the plug-in device engaging at least two reciprocal channel of ramps on two surfaces of a support box, by an insertable dual release bar attached to a pull cord or an handle of an hand tool for inserting two insertable bars between the channels of ramps and the reciprocal channels of ramps for unlock and pull to remove the plug-in device.

A plurality of bidirectional optoports forming plurality of junctions for propagating optical signals two way through a plurality of optically cascaded chains linked to an electrical grid of building unit via intelligent support boxes and four way exchanges to include optical links to the electrical grid via plug-in electrical devices including IoTs and Ai devices and for providing traffic control to optical signals and the many well known other communication signals.

An interference determining method, includes: obtaining first frequency information of a first resource; obtaining second frequency information of a second resource, where a frequency indicated by the first frequency information is lower than a frequency indicated by the second frequency information; determining, based on the first frequency information, harmonic frequency information corresponding to the first resource; and determining, based on the harmonic frequency information and the second frequency information, harmonic interference information between the first resource and the second resource.

An emission protection device including a signal generating unit to generate, for at least one electrical signal relayed by at least one conductor to a load, with which the load is switchable and/or energize-able, at least one electrical output signal, which is phase-shifted by 180 compared to the at least one electrical signal, and an emitting structure, which is connected to the signal generating unit so that the emitting structure is excitable with the at least one electrical output signal to emit an electromagnetic field. Also described is a bridge driver for a load, a controller for a load, and a load, as well as a method for operating a load by switching and/or energizing the load with the at least one electrical signal, generating the at least one electrical output signal, and exciting the emitting structure using the at least one electrical output signal to emit an electromagnetic field.

A plurality of bidirectional optoports forming plurality of junctions for propagating optical signals two way through a plurality of optically cascaded chains linked to an electrical grid of building unit via intelligent support boxes and four way exchanges to include optical links to the electrical grid via plug-in electrical devices including IoTs and Ai devices and for providing traffic control to optical signals and the many well known other communication signals.