2026-04-23 A2Z Garage Doors
In our years serving Lomita, we've seen this problem again and again: homeowners don't realize their garage door's most critical safety features exist.or worse, they're broken. Auto-reverse and photo eye sensors aren't luxury add-ons. They're the difference between a close call and a tragedy. Here's what you need to know to keep your family safe.
Auto-reverse is the mechanism that stops and reverses your garage door if it encounters an obstacle while closing. When functioning correctly, it prevents the door from crushing a person, pet, or object underneath. The system relies on either mechanical pressure sensors or electronic sensors to detect resistance.
Federal safety standards have required auto-reverse on all residential garage door openers since 1993. But age and wear reduce effectiveness. We've tested doors where the auto-reverse threshold was so high that it would only activate if a 50-pound weight blocked it.not a child's hand or a tricycle.
The auto-reverse should stop and reverse the door within one second of contact. If your door doesn't respond that quickly, or if it continues closing despite obstacles, it's a serious safety hazard that needs immediate attention.
Photo eyes (also called photocell sensors) are the small devices mounted on either side of your garage door opening, about 6 inches from the ground. They send an invisible beam across the doorway. When something breaks that beam.a person, a car, a child.the door halts its descent.
Unlike auto-reverse, photo eyes prevent the door from closing in the first place. They're incredibly effective for child safety, which is why we always recommend checking them monthly. Here's what to look for:
- Alignment: The beam must be unbroken. Dirt, cobwebs, or misalignment stops the safety function entirely. - Visibility: You should see a small light on each sensor when powered. If one is dark, the circuit is broken. - Response time: Walk in front of the sensors while the door closes. It should stop immediately.
**Need garage door safety in Lomita today?** Call (424) 487-6363. we cover same-day service across the area.
Photo eye misalignment is our number-one service call related to safety. A door that closes despite someone standing in the opening happens more than you'd think. Usually it's because one sensor shifted slightly.sometimes from a minor accident or vibration.and now the beam doesn't connect.
We also find photo eyes blocked by dust or debris. The good news: this is preventable. Wipe your sensors clean every month. The bad news: if the door doesn't stop when you break the beam with your hand, don't keep testing it. Call us immediately.
Another gap we find: homeowners don't know that photo eyes can be defeated intentionally. If someone removes or covers a sensor, the door operates without that safety layer. Teach your children never to cover the sensors and explain why.
Visit our garage door spring safety guide for additional hazards you should know about.springs alone are responsible for thousands of injuries annually.
You can perform a basic safety check yourself without professional tools. First, close your door manually using the wall button. As it descends, place an object (a 2×4 piece of wood works perfectly) under the door. The door should stop and reverse immediately. If it doesn't, call us for a same-day estimate.
Next, test the photo eyes. Close the door and walk through the beam while it's descending. The door should stop. Do this from both sides to ensure both sensors work. If either fails, the safety system is compromised.
If you notice either test fails, don't adjust it yourself. Sensor alignment requires precision, and improper adjustment can make the problem worse. We'll diagnose the issue, explain the cost upfront, and get it fixed the same day in most cases.
For a full inspection that covers springs, cables, and the entire opening assembly, our technicians at Garage Door Lomita recommend an annual check. Springs last 7 to 9 years typically.knowing the age of yours matters for safety planning. Check our maintenance tips guide for what else impacts longevity.
Don't use your garage door if auto-reverse or photo eyes aren't working. Manually close it using the emergency release, and contact us for a repair estimate. Some failures are simple fixes.a misaligned sensor, a blown safety eye bulb. Others require more involved work.
The cost of safety repair varies. A photo eye replacement runs $150,$300 depending on the opener model. Auto-reverse recalibration might be $100,$200. Call us at (424) 487-6363 for an honest estimate.we don't charge for diagnosis, and we never pressure you into work you don't need.
Your family's safety is worth the investment. Garage door accidents are preventable. Make sure your door has both layers of protection working correctly.
Q: How often should I test my garage door's auto-reverse and photo eyes? A: Test both safety features monthly. It takes two minutes and could prevent serious injury. If either fails the test, contact a technician immediately.don't use the door.
Q: Can I replace a photo eye sensor myself? A: Physically swapping the sensor is possible for some owners, but alignment is critical and typically requires a technician's precision tools. Improper installation defeats the safety purpose entirely.
Q: What if my photo eyes are misaligned but the door still closes? A: That's dangerous. A misaligned sensor might fail entirely soon, leaving you unprotected. Have it realigned by a professional before continued use.
Q: Do all garage door openers have auto-reverse? A: All openers made after 1993 are required to have auto-reverse. Older doors may lack this feature and should be upgraded for safety.
Q: How much does a garage door safety inspection cost? A: We provide free estimates. Call (424) 487-6363 or visit /contact to schedule an inspection and get a transparent price quote.