360 Degree Rotary Encoder Code Switch Digital Potentiometer EC11 7 Pins 20mm 10 pcs

Description:

A rotary encoder, also called a shaft encoder, is an electro-mechanical device that converts the angular position or motion of a shaft or axle to digital output signals.

Rotary encoders are used in a wide range of applications that require monitoring or control, or both, of mechanical systems, including industrial controls, robotics, photographic lenses, computer input devices .

Note: 

Avoid storing the products in a place at high temperature and high humidity.