Omron Rotary Encoder E6B2-CWZ3E (1000 P/R)

From the shop's description

This is Omron quadrature incremental rotary encoder E6B2-CWZ3E with 1000 P/R (pulse per revolution). The encoder outputs gray code which you can interpret using a microcontroller or Arduino and find out which direction the shaft is turning and by how much. This allows you to add feedback to motor control systems. Encoders of this kind are often used in CNC machines, balancing robots and dead reckoning navigation. This encoder is of improved reliability with reverse connection and load short-circuit protection Features Resolution: 1000 Pulse/Rotation Encoding Method: Incremental Input Voltage: 5 - 12VDC Maximum Rotating Speed: 6000rpm Allowable Radial Load: 30N Allowable Axial Load: 20N Cable Length: 50cm Shaft Diameter: 6mm Datasheet for encoder E6B2-CW3E Encoder manual and Arduino example code