Garage doors are one of the heaviest moving components in a home, which is why modern garage door systems include photoelectric safety eyes . During Las Vegas Absolute Home Inspections , missing, misaligned, or disabled safety eyes are a very common safety deficiency . Understanding how these sensors work — and why they matter — can help homeowners keep their families safe and avoid inspection issues. What Are Photoelectric (Photo-Sonic) Safety Eyes? Photoelectric safety eyes