Typical automatic lighting control applications involve an input device, such as a photo sensor, which interacts with a power controller, such as a switch. To interact, the input device sends a control signal to a controller, which then adjusts the load. The predominant traditional approach is to send a control signal along dedicated low-voltage wiring. A more recent approach rapidly gaining in popularity is to communicate using radio waves that travel through the air, eliminating the need for dedicated control wiring.
The resulting advantages enable advanced lighting control with greater installation flexibility, good scalability, and lower labor installation cost.