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If you open your garage manually, you don’t need sensors. If you have an automatic garage door opener, sensors are required by law. The federal law UL 325 mandates that all residential garage door openers in the U.S. must include sensors. Designed to prevent accidents and reduce the risk of entrapment, the sensors should be able to reverse the motion of the garage door within two seconds of detecting an obstruction. The sensors are there to keep you, your family, and your belongings safe from a door that might otherwise come down too hard or too fast.

Garage door sensors should be installed on each side of the door, typically six inches off of the ground. The sensors communicate through an infrared beam, so they need to face each other directly for the system to work properly. Make sure they’re level and aligned, and keep the area around them clear. If they’re too high or out of alignment, your garage door won’t function properly.

Christmas lights and decorations are prone to heat and humidity damage, so keep this in mind if you store them in the garage. Put the lights in plastic bins with tight-fitting lids to keep moisture out to keep them safe until next year. 

A garage counts toward the official square footage of a house if it is considered livable space. For a garage to qualify, it typically needs to be attached to the home and have permanent finishings like proper insulation, finished walls, and ceilings. It must also be livable year-round, which requires adequate heating, cooling, and ventilation. The exact legal requirements for what constitutes living space can vary by location.