Use of daylight linking or daylight dependent switching

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Used correctly, daylight linking and daylight dependent switching save energy and enhance the working environment but the contribution from daylight must be consistent over the controlled area. If some parts of the controlled area receive much less daylight than others, occupants of the darker area may not receive enough light.

We strongly recommend that only the row of lights nearest the window is controlled by any daylight dependent switching sensor and that no more than two rows of lights are controlled by one daylight-linked dimming sensor.

Daylight levels decrease rapidly away from a window. As a result either users deeper into the room are left with too little light when sensors are set to control the window row, or unnecessary energy is consumed by the window row to ensure users deeper into the room have sufficient light.

The diagrams below illustrate recommended solutions: