Featherweight Micro Servo R6FA
https://www.rc-corona.com/
A servo is a miniature gearmotor whose output shaft rotates from one end point to another when an electrical switch is thrown. Use them to animate miniature machinery, circus models, railroad switch points, working figures, semaphore signals, crossing gates, uncoupling ramps, garage doors, cranes, automobile lifts, signs, and so much more.