WayinTop 5pcs 360 Degree Rotary Encoder Module KY-040 Brick Sensor Development Board with Push Button for Arduino: Amazon.com: Industrial & Scientific
Amazon.co.jp: Anmbest 10pcs KY-040 5V20 Pulse/Circle Ink 360 Degree Rotary Encoder Module with Knob Cap for Arduino RaspberryPi : Industrial & Scientific
Amazon.com: 6 Sets KY-040 360 Degrees Rotary Encoder Module Brick Sensor Switch Development Board with 17x17 mm with Knob Cap : Industrial & Scientific