Safety Sensors
Safety Sensors
Keep Your Garage Door Safe and Functional with Properly Aligned Safety Sensors
Your garage door safety sensors do more than just blink when something’s wrong; they help protect your home, your family, and your property. These small but powerful devices are designed to prevent the garage door from closing if there’s anything in its path, thereby stopping injuries and damage.
At DoorJam Garage Repair, we understand the importance of working sensors in ensuring the safety of your entire garage system. Whether your garage door won’t close, the lights keep blinking, or the sensors appear misaligned, we’re here to help. You can try a quick DIY realignment using the step-by-step guide below, or contact us for same-day service from our experienced technicians.
What Are Garage Door Safety Sensors?
Garage door safety sensors are mounted near the bottom of the garage door track, usually between 4 and 8 inches from the ground. One sensor emits an invisible infrared beam, while the other receives it. When this beam is interrupted, the door will automatically stop or reverse to prevent an accident.
Typically, one sensor will have an amber or yellow light (the sending sensor), and the other will show a green light (the receiving sensor). When both lights are steady and not blinking, the sensors are correctly aligned and working as intended. If they’re flickering, off, or flashing, it’s a sign that something’s wrong and it needs to be fixed fast.
DIY: LiftMaster Safety Sensor Realignment (Step-by-Step)
You don’t always need a complete repair to fix your sensor problem. Follow these easy steps to realign your LiftMaster garage door sensors safely:
Locate the Sensors
Sensors are positioned on each side of the garage door near the bottom. Make sure both are securely attached and within the proper height range (4–8 inches above the floor).
Check the Indicator Lights
Amber/Yellow LED: This should be steady ON on the sending sensor when powered. Green LED: This should be ON on the receiving sensor when it’s correctly aligned. If either light is off, blinking, or flickering, there may be a misalignment, obstruction, or hardware issue.
Clean the Sensor Lenses
Dirt, spider webs, and dust can block the infrared beam. Use a soft cloth to wipe both lenses clean gently.
Loosen the Brackets
Carefully loosen the screws or wing nuts holding the sensors, allowing for easy repositioning. Avoid removing the hardware entirely; just enough to allow for movement.
Align the Sensors
Slowly adjust the sensors by hand until the green light is steady and no longer blinking. Ensure that nothing blocks the beam during this process, keep tools, hands, and objects out of the way.
Secure the Sensors
Once both lights are solid, re-tighten the brackets while keeping the sensors in position. Bumping them during this step can throw off alignment again.
Test the Safety Feature
Close the garage door using the wall button. While it’s closing, wave a long object (like a broom) between the sensors. The door should stop and reverse immediately if everything is working correctly.
DoorJam Garage
When to Call DoorJam Garage Repair
Not every sensor issue can be fixed with a realignment. If you’ve cleaned, adjusted, and tested your safety sensors and your door still won’t close, it’s time to call in the pros.
Our trained garage door technicians will inspect your system, diagnose the issue, and provide fast, affordable repairs. We carry replacement sensors for most major brands, including LiftMaster, and we’ll ensure your system is working safely before we leave.
Common problems we fix include:
- Sensor misalignment
- Loose or damaged sensor brackets
- Frayed sensor wiring
- Faulty LED indicators
- Complete system diagnostics and safety checks
With same-day appointments available and a focus on safety-first service, DoorJam Garage Repair is your go-to team for reliable garage door repairs.
Why Safety Sensors Matter
Your garage door is one of the heaviest moving objects in your home. Without properly functioning safety sensors, a closing door can pose serious risks to children, pets, cars, and anything in its path. That’s why federal safety regulations require sensors on all garage door openers built after 1993.
If your sensors are faulty, bypassed, or misaligned, you’re not just dealing with a minor issue; you’re putting your safety at risk. Our goal is to make sure that doesn’t happen.
Request Expert Sensor Service Today
Whether you’re facing a blinking sensor light or your garage door won’t close at all, DoorJam Garage Repair is here to help. We offer fast, friendly, and professional service across the area, and our team can get your sensors and your peace of mind back in working order fast.
Call now or book online to schedule your service today. Let us help you protect your home with safe, properly aligned garage door sensors
