For convenience and safety, garage door openers can feature one or two lights that turn on automatically when the door is opened.
Sensors transmit an invisible beam across the garage entrance. If the beam is broken while the door is closing, it automatically reverses.
A garage door opener is like a built-in, automatic lock. Once the garage door is closed, it's securely locked & can't be forced open.
Ensure that you can open your door during power outages. Just pull the release handle & the door will work like a traditional, non-motorized one.