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 analog or digital output signals. There are two main types of rotary encoder: absolute and incremental Specification: Pulse/revolution: 200PPR Source voltage : 5 to 24 V DC Maximum allowable speed: 6000 rpm Signal waveform: Two-phase + home position Output type: NPN open collector output / line-driver  IP50 dust proof  200PPR  1813 Package includes: 1 x KOYO TRD-MAX200B ROTARY ENCODER