Garage Door Safety Sensors: Everything You Need to Know

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Close-up of a garage door safety sensor mounted near the floor on a residential garage door track

Introduction

In Tacoma, WA, ensuring the safety of your family starts at the garage door. Garage door safety sensors: everything you need to know in WA is crucial if you’ve had any form of garage door repair. These sensors prevent accidents by detecting obstacles and automatically reversing the door. Whether you’re scheduling installation or routine maintenance, understanding how these devices work can save you time and money.

How Safety Sensors Work

Garage door safety sensors use an invisible infrared beam projected from one side of the door track to a reflector or a paired sensor on the opposite side. When this beam is interrupted by an object, the door opener immediately stops and reverses. This simple mechanism is a key component of any garage door repair and opener repair project, ensuring your door complies with safety standards.

Common Sensor Issues and Maintenance

Even minor issues can disrupt sensor function. Regular maintenance can keep sensors operating smoothly:

  • Misalignment: Check that both sensors face each other at the same height.
  • Dirty lenses: Gently clean the sensor lenses with a soft cloth.
  • Obstructions: Remove any debris, spider webs, or objects blocking the beam.
  • Loose wiring: Inspect wires for wear and secure connections.

For more detailed troubleshooting tips, visit our blog.

Installation and Testing Best Practices

Proper installation is vital for sensor reliability. Follow these steps during any installation:

  • Position sensors 4–6 inches off the ground facing each other.
  • Follow manufacturer guidelines to mount sensors straight and level.
  • Test the beam alignment using the opener’s manual close function.
  • Verify the door reverses when a small object is placed in the beam path.

Our full range of services includes professional sensor installation and comprehensive maintenance plans.

Emergency Service and When to Call a Professional

If your sensors fail unexpectedly, your garage door may become unsafe. Contact us immediately for emergency service when you notice:

  • Garage door closes without reversing on obstruction.
  • Sensor lights are off or blinking continuously.
  • Wiring is damaged or frayed.

Don’t risk injury—contact us for 24/7 emergency service and opener repair.

Frequently Asked Questions

How can I tell if my safety sensors are misaligned?

If the sensors are misaligned, you’ll see a yellow or red blinking light on one or both sensors. Check their position and adjust until both sensor lights glow steady green.

Can I clean the sensors myself safely?

Yes. Power down the opener, then gently wipe the sensor lenses with a soft, dry cloth. Avoid liquids and abrasive materials to prevent damage.

How often should I have sensors inspected?

We recommend a professional inspection at least once a year, or after any garage door repair, to ensure sensors are properly aligned and functioning.

What does the sensor beam pattern look like?

Most sensor beams create a rectangular detection zone about 2–3 inches wide. You can test it by slowly moving an object through the beam at different heights.

Is sensor replacement costly?

Replacement costs vary by model, but most standard sensors range between $50–$150 plus labor. Contact our team for an accurate quote.

Call (206) 339-9044

Helpful local resources in Tacoma, WA

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