
As the demand grows for environmentally responsible LED lighting, the need for fixtures that meet DarkSky compliance standards is more important than ever. The FLEX Series by CSC LED is specifically engineered to align with the Five Principles of Responsible Outdoor Lighting, offering a flexible, energy-efficient, and DarkSky Certified solution for outdoor lighting applications.
Effective outdoor lighting should serve a clear purpose. The FLEX series offers tailored illumination by supporting multiple optic options that match the specific needs of each application. Whether you're lighting a walkway, parking area, or building perimeter, these distribution options help ensure that light is used efficiently and only where it's needed.
When installed with a fixed mount at 3000K, the entire FL05 Series is DarkSky Certified, ensuring downward-directed light with minimal skyglow.

To meet the principles of DarkSky outdoor lighting, it's essential to prevent light spill and upward glare. The FLEX series achieves this by pairing the fixture with a Fixed Mount that restricts tilt, ensuring all light is directed downward.
Additionally, the fixture's hinged cover provides tool-less access for quick swapping of optics, making it simple to adjust the light's distribution for various site requirements. You can further refine directional control using optional visors that shield light from spilling where it's not needed - available for both front and rear installations.
To learn more about our FLEX FL05 Series Accessories, click here!

One of the most impactful ways to reduce light pollution is to limit brightness to only what’s needed. Each FLEX luminaire includes a power selection switch that allows you to adjust output levels on-site. For instance, a 150W fixture can be selected down to 120W or 100W, providing flexibility for each environment without over-lighting.
This ensures the application remains efficient and adaptive - a critical feature for those seeking energy-saving outdoor lighting with minimal environmental impact.
Effective, sustainable outdoor lighting isn’t just about where light is used; it’s also about when. The FLEX series offers flexible control options to help reduce unnecessary energy use. Each fixture supports the installation of a 3-pin photocell cap and a twist-in motion sensor, which can operate independently or together to automatically adjust lighting based on ambient light levels and activity.
Additionally, this series is compatible with 0-10V dimming, allowing for seamless integration into lighting control systems and enabling dimming or shutoff during off-peak hours. This ensures your lighting is only active when truly needed.
Shorter wavelengths (~400-500nm wavelengths) contribute heavily to skyglow and disrupt wildlife due to their high reflectivity. That’s why the FLEX series includes selectable colour temperatures - 3000K, 4000K, and 5000K - with 3000K or warmer required for DarkSky compliance.
For even better control in sensitive environments, the FLEX Type IV Amber Optics provide a close colour match to traditional HPS/LPS systems, as low as 2200K CCT. These optics offer warmer lighting that enhances visibility in fog and rain, maintains a CRI of 70+, protects nocturnal habitats, and preserves night sky visibility - ideal for municipalities and eco-conscious projects.
To learn more about our FLEX FL05 Series Type IV Amber Optics, click here!

In addition to the FLEX Series, CSC LED offers a full range of DarkSky-approved outdoor lighting solutions - including wall packs, bollards, area lights, and more - all engineered to support sustainable and responsible lighting practices.

Want a quick visual explanation? Watch our Technical Tuesday video on YouTube of how the FLEX Series meets Dark Sky lighting standards.