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Response Daylight
An incredibly simple and affordable way to incorporate daylight controls into your lighting designs.
Response Daylight Energy
Saving Energy
Lighting is a leading cause of energy consumption in commercial buildings and, as a primary source of heat gain, it also contributes to substantial energy usage for cooling systems.
Using daylight controls in your lighting design offers great potential to save energy. Research varies widely — depending on the design of the building and lighting controls system — but most case studies indicate daylight sensors can provide 30-35% energy savings in window-adjacent locations. Beyond improving a building's power performance, controlled daylighting can also provide soft-savings gained through the improved health and productivity of occupants.
This table shows the average annual savings you can achieve in window-adjacent locations with Response Daylight. Results may vary depending on building location, design, window glazing, etc.
| South-facing | North-facing | |
|---|---|---|
| Summer | 35-45% | 25-35% |
| Winter | 25-35% | 15-25% |
How it Works
Response Daylight is designed to save energy by working with people, not against them. If occupants experience too much distraction from changing light levels, they usually disable the sensors - eliminating any potential for energy savings. Sensors have a built-in delay to prevent disruptions from passing clouds and occasional shadows. In addition, Response Daylight applies a weighting to daylight, dimming electric light output gradually on a relative, weighted scale. This creates a more natural-feeling space and, ultimately, happier occupants.
This graphic illustrates how Response Daylight works to reduce luminaire output and save energy.
As daylight contribution increases, the sensor compensates for approximately 50% of additional daylight by dimming the luminaire output on a relative scale. For example, if the sensor is calibrated to 45fc on the horizontal surface and through daylight contribution the total light level increases to 85fc, the sensor will dim the space to 65fc. Dimming will continue until the minimum light output at 1.5V is reached.