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KY-040 Rotary Encoder Module (Pack of 2)



20 count rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency.

Please Note: These are not the smooth running types, there is a definite click as you turn them.


CLK – Encoder A output
DT – Encoder B output
GND – Ground / 0V
SW – ‘Select’ switch (activated when shaft pressed on top)

  • Rotary encoder module KY-040
  • Left and Right turn detection
  • Push button
  • Operating voltage – 5V
  • Circle pulse count – 20
  • 6mm Shaft
  • Size – 26mm x 19mm x 32mm

Click Here – to learn how to use a Rotarty Encoder

Additional information

Weight 100 g