How To Electrically Test Garage Door Safety Sensors?
Garage door safety sensors, or “electric eyes,” prevent accidents by detecting obstructions in the door’s path. If your garage door refuses to close or keeps reversing, electrical testing of these sensors may be necessary.
Start by checking the LED indicator lights and inspecting wiring for damage. Use a digital multimeter to test for proper voltage (typically 5–6V DC) at the sensor terminals. Next, measure resistance across the sensor’s input to ensure internal circuits are working. Also, check continuity in the sensor wires to rule out cable damage. If any readings are off or sensors fail to respond, they likely need replacing.
Always disconnect power before testing to avoid injury. Regular inspection and testing help maintain sensor function, ensuring garage door safety and reliable operation. For more details, check out Fix N’ Go.
