Required by federal law on any automatic garage door manufactured after 1993, sensors keep your system from causing injuries and damage. If you are new to overhead doors or recently had a new one installed, you may have many questions about this feature. To help you familiarize yourself with yours, here are a few questions homeowners often have about sensors.

Frequently Asked Questions About Garage Door Sensors

How do they work?

Sensors are found on the bottom sides of automatic garage doors and are typically a few inches off the ground. They project infrared light beams that meet in the middle to detect foreign objects, preventing the door from closing when there are items, animals, or people in its path.

Why are they important?

Sensors trigger the reverse function to prevent the door from injuring you, your loved ones, or your pets. They also ensure your door doesn’t catch on your vehicle as you drive out, saving you money on repairs.

Does sunlight affect them?

Yes. Since the sensors use infrared light, which the sun also emits, natural light can prevent your system from working. Avoid this issue by outfitting your sensors with sun shields. You can also move them deeper into your garage to keep them in the shade.

How can I test my sensor?

If you want to make sure your sensor is functioning, place a box or other object in the door’s path before hitting the ‘close’ button on your opening device. The door should automatically rise again as soon as it detects the box. If it doesn’t stop and the item gets crushed, schedule garage door repairs to prevent any accidents.

Ensure your garage door remains in excellent condition with repair services from Libby’s Expert Door Installations. Based in Millmont, PA, this installation and repair company offers residential and commercial services to clients throughout Central Pennsylvania. For your safety and convenience, they are fully licensed and insured. Find out more about their maintenance services on their website, or call (570) 922-1602 to schedule a visit.