6 min read
, federal law has required all garage door openers to include auto-reverse safety features. These sensors have prevented countless injuries and saved lives, but they only work when properly maintained and tested.
Modern garage doors use two primary safety mechanisms. Photo-eye sensors, mounted 4-6 inches above the floor on either side of the door, create an invisible infrared beam across the door opening. When anything breaks this beam while the door is closing, the door automatically reverses.
The second mechanism is the mechanical auto-reverse, which reverses the door if it contacts an obstruction during closing. Federal standards require doors to reverse within 2 seconds of contacting a 2-inch high object placed on the floor.
Sensors can fail gradually or suddenly. Dust accumulation, spider webs, vibration-caused misalignment, or electrical issues can all compromise sensor function. A sensor that worked yesterday may not work today.
The Consumer Product Safety Commission recommends testing your auto-reverse features monthly. For photo-eye sensors, place an object (like a cardboard box) in the door's path and attempt to close the door. It should reverse immediately without touching the object.
For mechanical auto-reverse, place a 2x4 flat on the floor in the door's path. The door should reverse upon contacting the wood. If either test fails, stop using your garage door until the sensors are repaired.
Misalignment is the most common sensor issue. The sending and receiving units must be precisely aligned for the infrared beam to connect. Even minor bumps or vibrations can cause misalignment, indicated by blinking sensor lights.
Wiring problems, often caused by rodents or lawn equipment damage, can interrupt sensor function. Sun interference can also affect sensors if direct sunlight shines into the receiving eye during certain times of day.
Our technicians can diagnose and repair sensor issues quickly, ensuring your family's safety. We also offer sensor upgrades for older systems and can install additional safety features like motion-detecting lights and smartphone alerts.
Don't compromise on safety—if your sensors aren't working perfectly, call ${siteConfig.phoneFormatted} for same-day service.