An automatic garage door opener can be described as an electronic motorized device that opens and closes garage doors by using sensors that are mounted on the garage ceiling. The majority of garage door openers are equipped with a radio transmitter that can be carried by the user in order to activate or deactivate the door. The transmitter emits a signal when the garage door is raised. This signal is picked up by the receiver, which causes the garage door to raise or lower. Certain garage door openers come with multiple sensors that work together to open the doors. This is referred to as a "smart opener.
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