Check the listing for details. 5pcs 360 Degree Rotary Encoder Code Switch Digital 7 Pins 15mm D-Shaft. Condition: New. Listed at 14.22 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 Type: D TypeShaft Diameter: 6mm/0.24"Shaft Height: 15mm/0.59"Thread Diameter: 6.8mm/0.27"Total Dimension: 15mm x 12mm x 25mm / 0.59" x 0.47" x 0.98"(L*W*H) Note: Avoid storing the products in a place at high temperature, high humidity. Do not touch the product with water.