The one-to-one relationship between the wall switch and the lighting circuit is completely decoupled.
There really is no need to limit the wiring so that one switch controls only one lighting. By decoupling the switch from the lighting, the lighting can be controlled from any switch and any switch can control any lighting. The relationship between any switch or lighting is defined digitally and can be reprogrammed without physically rewiring the lighting circuits.
Digital switches can occupy less wall space.
A classic wall switch has at most 3 gangs, but digital switches can have as many as 8 gangs (In the US, the situation is much worse as each switch can have only one button). Thus, more can occupy the same amount of wall space.
Each button can be independently assigned.
There are multiple buttons on each digital switch and each one can be assigned to a different function independently of the others. Not only can each button be assigned to control separate circuits, they can also be assigned to control groups or patterns.
Greatly reduces the wiring work.
Digital switches are wired based on a digital signal bus, even if there are lots of digital switches, the wiring is still very simple. In addition, expanding the number of switches in the future is very simply, as one only needs to extend the bus.
The more lighting circuits there are, the greater the amount of simplification (with scene switches).
When a room seeks to be both stylish and energy saving, the circuit wiring becomes more elaborate, but the beneficial effect becomes even more pronounced. So even though there are more circuits, the number of digital switches can be lessened by making use of patterns; and in addition, the less complicated it becomes to operate.
The more elegant the atmosphere for the room, the more lighting circuits there will be. In the traditional approach, not only are there more circuits and the wiring becomes quite complicated, the operator will thus be faced with a wall of switches and will have great difficulty in determining how to switch the right ones to obtain the desired scene. But if digital switches are used, a single switch can be assigned to several circuits, which greatly reduces the number of switches, and simplifies the work of the operator.
Reconfigurable lighting layout.
In a commercial or public setting, being able to reconfigure the lighting layout is highly desirable when the space needs to be repartitioned for different purposes. With traditional lighting, this can only be done by physically rewiring the circuits and adding new switches is a laborious, expensive and time consuming process, not to mention the disruption it brings to the usage of the space.
On the other hand, with digital switches, the new layout can be reprogrammed digitally, and new switches can be added anywhere near the digital bus with just a few wires.
For large areas, one can install multiple switches in various locations for convenience in operation.
When the space occupied by a room is vast and there is only a single centralized control interface, the user would need to traverse long distances to control the lights. But if there are multiple digital switches spread out over several locations, then lights could be multiply accessed and the user can operate the switches nearest their work location.
Remote monitoring and control.
The main benefit of centralizing control is the ability to remotely view and control the lights for the entire building. In addition, one can also add the capability for scheduled control to further improve the benefits from having a lighting control system.