When the door is closed the magnetic switch is closed and the relay is feeding terminal 87 a dead end and the light is off.
Garage door open indicator light.
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This is a common garage door safety feature that prevents injury and damage to personal belongings.
Xodus innovations bl200 in cabinet led battery light automatically turns on off when door opens closes.
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This led light flashes a specific number of times.
Here are the most common problem indicators and solutions for common garage door openers.
Other signs include flashing garage door opener lights missing sensor light or flashing sensor lights.
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Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting.
The short of it is that you need an led for displaying your garage door s status a switch that detects whether or not the door s open and enough materials to mount both in place.
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When the door is opened even slightly the magnetic switch is opened and the relay switches to 87a and completes the circuit to the led.
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