This is an 8421 absolute position encoder with 16-gear code(0-F). The mechanical position determines the uniqueness of each position of the encoder. Compared to a potentiometer, it doesn’t require memory, reference point and constant counting. Whenever you need the position, you can just easily read it. In this case, the anti-interference of the encoder and the reliability of the data are greatly improved. And because of the absolute uniqueness of each position, the anti-interference ability, and no power-off memory function required, this product is widely used in many kinds of industrial systems for device status controlling.

• Operating Current: 150mA, 42V
• 8421 Encode: 16-gear(0-F)
• Service Life: 10000 steps
• Operating Temperature: -40~85℃
• Dimension: 19x19mm/0.75x0.75”
• Mounting Aperture: 2.0mm
• Mounting Hole Pitch: 15x15mm

• Product wiki

• 1 x 8421 Encoder  Vertical / Horizontal 
• 2 x 2.54 Black Single Row Pin Header-3P