Incremental Rotary Encoder

$6.95 ea

  • Part no.: 2123531
  • Manufacturer: Parallax
  • Manufacturer no.: 27805
  • RoHS Compliant
# of units Price
1+ $6.95
10+ $6.25

Incremental Rotary Encoder

This Incremental Rotary Encoder provides 16 pulses per revolution via 2-bit quadrature outputs. 3-pin SIP header provides easy breadboard connection. This encoder rotates continuously through 360 degrees and provides detent to hold position. Used with a push button this encoder could provide a complete menu / input system for your microcontroller.


  • Low-Cost Input Device (can replace multiple switches or potentiometers)
  • Less than 1" square fitting into even smaller enclosures
  • 100,000 life cycles for reliability and long life
  • 1/4" threaded shaft with flatted end for knob, mounts in enclosure or on PCB

  • Application Ideas

  • Menu selection
  • Digital audio volume/tone control

    Key pecifications

  • Electrical Ratings: 250mA @ 28VDC (Max) / 1.5mA @ 115VAC (Max)
  • Communication: 2-bit Quadrature Code
  • Dimensions: 0.925 x 1.02 x 1.093 in (23.50 x 25.91 x 27.76 mm)
  • Operating temp range: -40 to +185°F (-40 to +85°C)

  • Note: See datasheet for additional information on electrical and mechanical specifications.

    Downloads & Resources

    Manufactuer Datasheet
    Savage Circuits Episode 2 (YouTube)

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