Quick Overview 

1. Model : KY-040.
2. Type : Incremental Encoder.
3. Cycles per revolution (CPR) : 20.
4. Working voltage : 0 – 5V.
5. Material : PCB + Brass.
6. Mounting Nut Thread diameter: 6.6mm
7. Weight : 10 gm.

Product Description

       The M274 360 Degree Rotary Encoder Module Brick Sensor is a rotary input device (as in knob) that provides an indication of how much the knob has been rotated AND what direction it is rotating in. It’s a great device for stepper and servo motor control.  You could also use it to control devices like digital potentiometers.