A two-way load control system comprises a power device, such as a load control device for controlling an electrical load receiving power from an AC power source, and a controller adapted to be coupled in series between the source and the power device. The load control system may be installed without requiring any additional wires to be run, and is easily configured without the need for a computer or an advanced commissioning procedure. The power device receives both power and communication over two wires. The controller generates a phase-control voltage and transmits a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage. The power device transmits a reverse digital message to the controller via the power wiring.

A two-way load control system comprises a power device, such as a load control device for controlling an electrical load receiving power from an AC power source, and a controller adapted to be coupled in series between the source and the power device. The load control system may be installed without requiring any additional wires to be run, and is easily configured without the need for a computer or an advanced commissioning procedure. The power device receives both power and communication over two wires. The controller generates a phase-control voltage and transmits a forward digital message to the power device by encoding digital information in timing edges of the phase-control voltage. The power device transmits a reverse digital message to the controller via the power wiring.

In accordance with various embodiments, lighting systems features multiple inter-connectable light panels each having multiple light-emitting elements thereon. One or more of the light panels features one or more connectors, and associated conductors, for the transmission of power, communication signals, and/or control signals.

A communications device for forming a network node between two or more devices or systems. The communications device has a power supply connector for connecting to a power supply in a light socket of a lighting system thereby to power the communications device. The communications device depends from the light socket by the power supply connector. The communications device also includes a receiver for receiving incoming information from one or more first devices or systems, and a transmitter for transmitting outgoing information to one or more second devices or systems.

Apparatus and methods for controlling correlated color temperature (CCT) and lighting intensity in lighting fixtures are described. The CCT and intensity may be controlled independently over conventional AC wiring using a conventional dimmer. A lighting controller that resembles a conventional dimmer and that can be installed in place of a dimmer may be used instead of a conventional dimmer to access more control functionalities, still using conventional AC wiring. Wireless communication with the lighting fixture and/or lighting controller are possible.

A DC power supply for lighting includes low voltage driver electronics for any suitable load such as lighting along with a supervisory controller that communicates to the driver electronics via any suitable digital communication protocol. Each driver's output ports include a 3rd wire that communicates to the low voltage load fixture for the purpose of auto-negotiating the appropriate power level without first having to energize the fixture.

A DC power supply for lighting includes low voltage driver electronics for any suitable load such as lighting along with a supervisory controller that communicates to the driver electronics via any suitable digital communication protocol. Each driver's output ports include a 3rd wire that communicates to the low voltage load fixture for the purpose of auto-negotiating the appropriate power level without first having to energize the fixture.

An network addressable lighting device that receives the input power from a power source (PSE), such as a network Power Over Ethernet (PoE) source, at a physical interface and data assembly PIDA and passes the signal directly to a second power assembly (PA) while the AC coupled high-speed data lines stay exclusively on the PIDA that contains the input and output physical interfaces, such as RJ interfaces. All power rails required to run the PIDA are converted on the PA and can then be sent back to the PIDA via low-cost conventional board stacker connectors. Movement of the high-current is done on the power assembly and not the data assembly where the sensitive communications primarily occur. The implementations thus provide an ideal separation of power and data structures to reduce EMI/EMC issues in a low cost and compact device.

An network addressable lighting device that receives the input power from a power source (PSE), such as a network Power Over Ethernet (PoE) source, at a physical interface and data assembly PIDA and passes the signal directly to a second power assembly (PA) while the AC coupled high-speed data lines stay exclusively on the PIDA that contains the input and output physical interfaces, such as RJ interfaces. All power rails required to run the PIDA are converted on the PA and can then be sent back to the PIDA via low-cost conventional board stacker connectors. Movement of the high-current is done on the power assembly and not the data assembly where the sensitive communications primarily occur. The implementations thus provide an ideal separation of power and data structures to reduce EMI/EMC issues in a low cost and compact device.

An internet of things system having a smart light bulb and a smart fixture. The smart light bulb may be inserted into and connect with the smart fixture for power to the smart light bulb. The smart light bulb may be configured by reading configuration information from a memory in the smart fixture. As a whole, the system may have two or more smart light bulbs inserted in two or more smart fixtures, respectively. The two or more smart light bulbs may be interconnected with one another with communication links to make up a mesh network. Non-bulb devices may be connected to the mesh network.