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 . Specification: Outward Size: 30*30 Axis Diameter: 4, D-shaped Incision Pulse Number: 60p/r-500p/r Voltage: 5-12v or 12-24V Output signal:  A phase B phase, with origin Z output Output Form Open Collector Output and Voltage Output High response frequency 150 kHz High speed: 6000r/min Protection Level: IP50 Temperature: -10 C+70 Packages Include: 1 x Neimicon Rotary Encoder OSS-02-2MHC 200PR