Electrical Grounding

Our Impact LED G3 electronic message center comes equipped with a 2" slotted mounting rail on the back, a valuable feature that streamlines installation. This slotted hole offers flexibility for precise sign alignment, eliminating the need for drilling through the rail. Installers appreciate the convenience of this pre-punched hole, although it can also be welded if necessary, making the installation process smoother and more efficient.

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Proper electrical grounding and bonding is not just for safety. Reducing Ohm resistance will contribute to a well performing EMC.

Here are several suggestions to consider:

Orientation Matters

When possible, choose a mounting location for the brightness sensor which will avoid interference from ambient light sources such as street lights or headlights. We suggest pointing it up at the sky or north.

Avoid Artificial Shade

Install the sensor away from potential obstructions like nearby trees or awnings, ensuring an unobstructed view of the sky.

Sun Exposure is Key

Position the sensor in a location where it can exclusively detect natural sunlight. This ensures accurate readings and appropriate adjustments to your sign's brightness throughout the day.

Steer Clear of East/West

To maximize effectiveness, avoid facing the sensor east or west. This prevents the sign from being in the dark for a significant portion of the day, maintaining optimal visibility.


Proper installation based on these guidelines will enhance the performance of your brightness sensor, guaranteeing a well-lit and attention-grabbing sign day and night.

Thank you for choosing our products. If you have any further questions or need assistance, please feel free to contact our support team.

What else does Impact LED offer?

Cell Modem Connectivity

Enjoy a fast and easy connectivity experience thanks to our partnership with Verizon wireless. No more running ethernet cables and pointing wifi antennas. Talk with our staff to find out of cell modem connectivity is the best choice for your project.

Cloud-Based Software

Securely hosted on Amazon AWS, and ready for 2 factor authentication, our content and sign management platform is accessible from any web browser. Impact Cloud Plus is action packed with all the features your customers will expect and plenty they’ll be happy to learn!

Combo Sign Packages

Impact LED supplies customers with more than just awesome electronic message centers; check out our Standard Combination Packages. Illuminated box signs and a pole cover are a great addition to your EMC purchase, making your project faster and easier.