This part is a QUADRANT Quadrature Encoder Module made by US Digital, a leading manufacturer of motion control components. This model includes a 25-pole magnetic encoder disc, motor drive circuit interface and an LED fault indicator. The encoder has an operating temperature range of -20 to 70 °C and a resolution of Selectable to 2500 Counts/Rev. This encoder is capable of providing digital outputs which can be used to provide feedback and control of angular position, velocity and direction information.