An incremental rotary encoder is a type of electromechanical device that converts the angular motion or position of a rotary shaft into analog or digital code that represents that motion or position . Features: Good reliability, long life, anti-jamming performance. Stainless steel shaft has higher stability and protection. The metal shell is more solid and anti-impact. Bearing load heavy, anti-oil and water. Applicability to a wide variety of mechanical and industrial control. Specifications: Model: E6B2-CWZ5B Brand : Omron Resolution: 500 P/R Brown: 12v to 24vdc Blue: OV(COMMON) Sheild: GND Shaft: 6mm Dia-40mm, 6 Wire PNP NO(12V-24V) Package Includes: 1 x 500PPR OMRON Incremental Rotary Encoder E6B2-CWZ5B