Check the listing for details. 5Pack 360 Degree Rotary Encoder Code Switch Potentiometer EC11 7Pins 20mm. Condition: New. Listed at 15.26 USD. 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. Specifications:Adjustment method: 360 DegreePin Numbers: 7Number of digits: 20 digitsRated Voltage: 5 VoltShaft Diameter: 6mm/0.24"Shaft Height: 20mm/0.79"Thread Diameter: 6.8mm/0.27"Total Dimension: 15mm x 12.5mm x 30mm / 0.59" x 0.49" x 1.18"(L*W*H) Note: Avoid storing the products in a place at high temperature and high humidity. .