2026-06-12 7 min read A2Z Garage Doors
In our years serving East Granby, we've seen this problem again and again: homeowners don't understand the safety devices protecting their families from a garage door. Photo eyes and auto-reverse systems are federally required for good reason. They prevent crush injuries and death. But they only work if they're installed correctly and tested regularly.
A photo eye is a sensor that detects motion or obstruction beneath your garage door. When something blocks the beam, the door stops and reverses. They're mounted near the bottom of each side of the door opening, about 6 inches off the ground. Federal law requires them on all residential garage doors manufactured after 1993. See our guide on smart garage door technology in east granby: app control that actually works.
The catch: photo eyes fail silently. Dust, spider webs, or misalignment can block the beam without you knowing. A child playing near the door, a pet, or a tricycle won't trigger protection if the sensors aren't working. Testing takes 30 seconds. Place a cardboard box under the descending door. If it doesn't stop and reverse, you have a problem.
Auto-reverse is a mechanical or electronic safety feature that reverses the door if it meets resistance. Think of it as a dead-man's switch. If the door contacts an obstacle during closing, the opener detects the pressure change and reverses direction. Read about smart lock integration: protecting your family.
This is separate from the photo eye. Your door should have both. Photo eyes catch problems before impact. Auto-reverse catches what the photo eye misses. Together, they form a safety net. Separately, each is incomplete.
We've installed and maintained hundreds of openers across East Granby and neighboring towns like Simsbury. The most common safety failure we find is a worn auto-reverse threshold that's set too high. It needs adjustment every 2-3 years as springs wear and door weight shifts.
**Need garage door safety in East Granby today?** Call (860) 791-4778. We cover same-day service across the area.
Many homeowners assume their door is safe because it's new or recently serviced. That's a dangerous assumption. Photo eyes drift out of alignment from vibration. Auto-reverse thresholds drift from spring wear. A door that was safe last month might not be safe today.
Our recommendation: test your door monthly. Close it with the photo eye beam blocked (use your hand, a shoe, anything). The door should stop and reverse immediately. If it doesn't, schedule a free quote right away. This isn't a cosmetic repair. This is child safety.
If you haven't had a professional inspection in over a year, read our garage door maintenance guide. Maintenance visits catch safety issues before they become emergencies.
People disable photo eyes when they're annoyed by false stops. Wrong. The photo eye is annoying because something needs fixing, not because the photo eye is broken. Disabling it removes your door's primary protection.
Another mistake: running the door with a broken spring and relying on auto-reverse. A broken spring changes the door's weight and balance. Auto-reverse can't compensate for a 200-pound imbalance. The door becomes a falling object, not a controlled mechanism. Springs last 7 to 9 years, not 10. Plan ahead.
When Garage Door East Granby handles a safety inspection, we test both photo eyes and auto-reverse. We check alignment, clean sensors, and adjust thresholds. We also inspect springs, cables, and pulleys. A single failure point can disable your entire safety system.
The cost of a safety inspection is far less than the cost of a hospital visit. We provide an estimate before any work begins, and our pricing is honest. No surprises, no upselling. Learn more about our safety services.
Your garage door's safety isn't negotiable. If your door is over five years old, or if you've never had a professional safety check, call us today. We'll give you a straight answer about what's working and what needs attention.
Don't wait for a near miss. Call (860) 791-4778 or contact us online to schedule your safety inspection. We offer same-day availability and honest pricing.
Q: How often should I test my garage door's auto-reverse? A: Test monthly by placing an object under the descending door. It should stop and reverse immediately. If it doesn't, contact us for a same-day estimate. Auto-reverse threshold adjustments are routine maintenance.
Q: Can I fix misaligned photo eyes myself? A: Photo eyes are finicky. Small adjustments look easy but often create new problems. We recommend professional realignment. It takes 15 minutes and costs far less than a safety failure.
Q: What's the cost of a safety inspection? A: We provide free estimates for all safety work. Most inspections reveal one or two minor adjustments. Costs depend on what we find, but honesty is our policy.
Q: Do older garage doors have photo eyes? A: Doors built before 1993 often lack photo eyes. If yours is older, we strongly recommend adding sensors. It's an affordable upgrade that protects your family.
Q: How do I know if my photo eye is working? A: Look for a small light on each sensor. Most have a red or green indicator. If you don't see a light, the sensor may be unpowered or blocked. Call us for diagnosis.