# Garage Door Opener Photo Eyes Sensors

**Photo eye safety sensors** stop your garage door from closing on people, pets, or objects. If the door only closes when you hold the wall button or the opener light flashes, the sensors are likely misaligned, blocked, or faulty.

**Choosing the right sensors:** Match sensors to your opener’s model and technology. Check the motor head label for the model number, terminal names (e.g., “Sensor”/“Safety”), and wiring style. When replacing, it’s best practice to replace _both_ sensors as a pair.

### Installation & Alignment

-   Mount one sensor on each side of the door, about 4–6 inches above the floor.
-   Run low-voltage wires back to the opener and connect to the sensor terminals as directed.
-   Remove any obstructions, clean lenses, and align sensors until both indicator lights are solid.
-   Test: The door should reverse if the beam is interrupted while closing.

### FAQs – Photo Eye Sensors

How do I know my sensors are bad?

Symptoms include the door closing only when the wall button is held, blinking indicator lights that won’t steady after alignment, or no lights at all despite good wiring.

Are photo eyes universal?

No. Sensors must be compatible with your opener’s model/technology. Always confirm compatibility on the product page before ordering.

Can I bypass the sensors?

No. Safety sensors are required on openers manufactured after 1993. Bypassing them is unsafe and may disable normal operation.

Do I need to replace both sensors?

Yes, replace them as a matched pair to ensure proper operation and alignment.

Why do my sensors go out of alignment?

Vibration, accidental bumps, loose brackets, or direct sunlight can cause misalignment. Tighten hardware, shield from glare if needed, and realign until both lights are solid.

## Products in this collection

- [Wayne Dalton Infrared Safety Beam Sensors](www.expressgaragedoors.com/products/wayne-dalton-infrared-safety-beam-sensors-260597-260600) - 93.88 USD
- [Challenger Infrared Safety Beam Sensors](www.expressgaragedoors.com/products/challenger-infrared-safety-beam-sensors) - 92.88 USD
- [Genie Safe-T-Beam Sensors](www.expressgaragedoors.com/products/genie-garage-door-opener-photo-eyes-safe-t-beam-sensors) - 47.87 USD
- [Bell Wire Copper Conductor for All Garage Door Openers - 25ft](www.expressgaragedoors.com/products/liftmaster-bell-wire-41a0323-copper-conductor-for-garage-door) - 12.99 USD
- [LiftMaster 041-0136 Safety Sensor Only Kit](www.expressgaragedoors.com/products/liftmaster-041-0136-safety-sensor-kit) - 38.99 USD
- [LiftMaster 041-0365 Safety Sensor and Brackets Kit](www.expressgaragedoors.com/products/liftmaster-041-0365-safety-sensor-and-brackets-kit) - 39.99 USD

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> Source: [Express Garage Doors](www.expressgaragedoors.com/collections/garage-door-opener-photo-eyes-sensors)
> Updated: 2026-06-10