Bypassing Garage Door Sensor

Bypassing garage door photo sensor
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Bypassing Garage Door Sensor – 2023


Garage door sensors are an essential safety feature that prevents accidents and injuries by detecting obstacles in the path of the closing garage door. However, there may be situations where you need to temporarily bypass the sensor, such as when performing maintenance or testing. In this article, we will discuss the steps to bypass a garage door sensor in a safe and responsible manner.

Understanding Garage Door Sensors

Garage door sensors typically consist of two units – a transmitter and a receiver – placed on either side of the garage door, near the floor. The transmitter emits an invisible beam of light to the receiver. When an object, such as a person or vehicle, interrupts this beam, the sensor signals the garage door opener to stop closing and reverse its direction.

Reasons to Bypass Garage Door Sensor

There are several legitimate reasons why you may need to bypass a garage door sensor. For example, if you are performing maintenance on the garage door or its components, bypassing the sensor can prevent unwanted interruptions. Similarly, if the sensor is malfunctioning and causing the garage door to close unexpectedly, bypassing it temporarily can provide a quick solution.

Steps to Bypass Garage Door Sensor

Before attempting to bypass the garage door sensor, ensure that you understand the potential risks and responsibilities involved. Bypassing the sensor should only be done temporarily and for valid reasons. Here are the steps to follow:

Step 1: Disconnect Power

Start by disconnecting the power to the garage door opener. Locate the power cord and unplug it from the electrical outlet. This will prevent any accidental activation of the garage door while you work on bypassing the sensor.

Step 2: Identify Sensor Wires

Next, you need to locate the sensor wires. These wires are usually connected to the back of the garage door opener. Look for a pair of wires, typically colored white and black or white and red, that are connected to the terminals labeled “sensor” or “photo-eye” on the opener unit.

Step 3: Disconnect Sensor Wires

Once you have identified the sensor wires, carefully disconnect them from the garage door opener. This will effectively disable the sensor and allow you to bypass it temporarily.

Step 4: Twist and Connect Wires

To complete the bypass, twist the two sensor wires together. Take the white wire and twist it with the black or red wire, depending on your wire color configuration. Use electrical tape or wire connectors to secure the twisted wires.

Step 5: Test the Bypass

Before restoring power to the garage door opener, it is important to test the bypass. Make sure there are no obstructions in the path of the garage door and then plug the power cord back into the electrical outlet. Activate the garage door opener and observe its behavior. The door should close without reversing, as the sensor is temporarily bypassed.


Bypassing a garage door sensor should only be done temporarily and for valid reasons. It is important to prioritize safety and use caution when working with garage door systems. Remember to reconnect the sensor wires and restore normal operation as soon as you have completed the necessary tasks. If you are unsure or uncomfortable with bypassing the sensor, it is recommended to seek professional assistance from a qualified garage door technician.