door opener

or door-opener

noun

1. a mechanism that automatically opens a door, as of a garage, when actuated by a radio transmitter, electric eye, or other device.
2. Informal. something that is effective in leading to opportunity or success:

   Sales experience can be a door opener for young executives.

Example Sentences

Amazon offers another option in certain parts of the country if you’re enrolled in Amazon Prime and have an internet-connected garage door opener: Its drivers can deliver packages inside your garage.

From Los Angeles Times

"You could say that the eye muscles function as both an eye-opener for understanding the disease and as a door opener to a treatment for the whole body," says Fatima Pedrosa Domellöf, professor of eye diseases at Umeå University and one of the study's authors.

From Science Daily

He said he "reconnected" with the song, which he now saw as a "door opener".

From BBC

"I hope we can now be a door opener for other organizations as well. That's what we're seeking."

From Reuters

Reconnect your garage door opener if you set it to manual.

From Los Angeles Times