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The two-position wall switch may be the most common form of lighting control. It’s inexpensive and simple to install, but it’s not always the best option.
How many times have you attended a seminar or meeting where the speaker says, “Can someone get the lights please” and everyone waits while someone plays with a bank of switches to reduce the overall light but not plunge the room into darkness?
A dimmer takes no more time to install; a bank of dimming switches would make this a more pleasant scenario. Even better might be a control unit with High, Medium, Low, and Off buttons.
Think about how a room or area will be used, and how convenient control options can be a good upsell on that particular lighting project.
What if the speaker had a remote control for the lights and could adjust them at will? Remote control units can be wall-mounted; many systems use RF and some allow you to use multiple controls. This opens up many possibilities for a flexible installation.
The occupancy sensor is a popular control for lighting. It’s often used to save energy, by turning lights on (or to a higher output level) when someone enters an area and then turning the lights off (or dimming them back down) when the room is considered no longer occupied (typically after a set time of no motion signals).
Source: Mark Lamendola | Mindconnection