Features: brand new and high quality Non-contact magnetic induction angle measurement module. High precision, a variety of output modes: IIC , PWM and voltage. Electrical parameters: VCC: 3.3 V GND: Feed ground Out: PWM / Analog output voltage DIR: Direction of rotation (earth = The value increases clockwise; then VCC = The values clockwise are reduced) SCL: IIC The clock line communication SDA: IIC Data communication line GPO: Mode selection (internal ground traction = Programming mode B ) Specification: Color: As pictures shown. Size: approx. 23x23mm(0.91x0.91in) Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Magnetic Encoder(other accessories demo in the picture is not included.)