How to Bypass Garage Door Sensor

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    How to Bypass Garage Door Sensor

    Garage door sensors ensure safety by preventing the door from closing when an obstruction is in its path. Sometimes, these sensors might malfunction or become a hindrance, making a bypass necessary. For a more in-depth look at when garage door issues arise, explore how a garage door sometimes only opens a little then stops.

    Step-by-step Guide to Bypassing Your Sensor

    1. Ensure Safety First
      • Make certain no pets, objects, or individuals are in the pathway.
      • Confirm that the door and its components are in good working order.
    2. Locate and Assess the Sensors
      • Identify the sending and receiving eyes.
      • Inspect for apparent damages and correct alignment.
      Steps Description Notes
      1 Ensure no obstructions Prioritize safety
      2 Locate the sensors Typically found on either side of the door
      3 Disconnect sensors Either unplug or unscrew
    3. Disconnect the Sensors
      • Unplug or unscrew the sensors from their mounted position.
    4. Manipulate the Mechanism
      • Join the two sensor wires together.
    5. Testing the Manual Operation
      • Attempt to operate the garage door manually.

    To delve into the mechanics and essential parts of garage door operations, consider exploring the parts of a garage door opener.

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    • Expert Knowledge: We’re versed in a myriad of garage door brands and configurations.
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    For more on our exceptional services, feel free to check our detailed guide on how to manually open a garage door.


    How Do I Identify My Garage Door Sensor?

    Garage door sensors, often known as photoelectric sensors, are pivotal devices in ensuring the safety and functional efficiency of your garage door. Typically, these sensors are located on either side of the garage door, close to the floor, and are aligned with each other. One sensor emits an infrared light beam, while the other receives it. When this beam is obstructed, the garage door is prevented from closing, ensuring that no person or object is in the pathway of the moving door. Identifying these sensors is usually straightforward due to their positioning and the LED lights (one green, indicating the sending unit, and one orange/red, indicating the receiving unit) they possess. When the pathway between these two sensors is clear, the LED lights should be solid; if there’s an obstruction, the lights may flash or turn off, indicating a misalignment or obstruction.

    Why Might Bypassing the Sensor Be Necessary?

    While garage door sensors are crucial for safety, there are instances when they may necessitate bypassing:

    • Malfunctioning Sensors: Over time, sensors can malfunction, misreading obstructions or failing to operate correctly.
    • Damaged Units: Physical damage, such as cracks or bends, could alter the sensor’s functioning.
    • Persistent Misalignment: Sometimes, despite realigning sensors, they continue to misread the pathway.
    • Temporary Solution: In urgent situations where the door needs to be closed, and professional help is unavailable, bypassing may provide a temporary solution.

    Understanding when and why a garage door abruptly ceases its function is also pivotal in handling emergencies, offering crucial insights into potential sensor issues. More information on how to address a garage door that opens and then closes immediately can be found on our blog.

    What are the Risks Involved in Bypassing Sensors?

    While bypassing the sensors can offer a temporary respite in certain situations, it comes with substantial risks:

    • Safety Hazard: The primary function of these sensors is to prevent the door from closing when an obstruction is present. Bypassing them eliminates this safety feature, creating a risk for people, pets, and objects.
    • Damage to the Door: Without the sensor to stop it, the door might close on an obstruction, causing potential damage to both the door and the object.
    • Legal and Insurance Implications: In some jurisdictions and insurance policies, altering safety mechanisms can have legal implications or affect claims in case of an accident.

    Can I Fix the Sensor Without Bypassing It?

    Absolutely. In many cases, fixing a sensor might involve a few simple steps and doesn’t always necessitate bypassing. Here are some possible interventions:

    • Cleaning: Dirt and debris on the lens of a sensor can obstruct the infrared beam. A gentle wipe with a soft cloth can sometimes resolve issues.
    • Realignment: Sensors might get knocked out of alignment. Ensuring they are correctly positioned opposite each other can remedy functionality.
    • Wire Checking: Inspect the wires connecting the sensors to the garage door opener for any wear and tear or disconnections.
    • Replace the Unit: Sometimes, persistent issues may indicate that the sensor needs replacing.


    Efficiently bypassing a garage door sensor involves ensuring safety, locating, disconnecting, and manipulating the sensor mechanism. With extensive expertise and an impressive array of services, London Garage Door Repair emerges as your reliable companion in tackling garage door predicaments. For insights into more specific issues like how to open a garage door with a broken spring, feel free to explore our blog. Remember, when in doubt, contact us, your local garage door experts, to ensure secure and professional solutions.

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