Cylewet 5Pcs KY-040 Rotary Encoder Module with 15×16.5 mm with Knob Cap for Arduino (Pack of 5) CYT1062

One round number of pulse: 20
Working voltage: 5V
The rotary encoder can count the number of pulse output during rotation in the positive direction and reverse direction through the rotation and this rotation counts are not limited.
With the key on the rotary encoder, you can reset to the initial state, that is, counting from 0.
The Material of Knob Cap: aluminium alloy
The Specification of Knob Cap: diameter: 15mm/ 0.59in; height: 16.5mm/ 0.65in

Package Includes:
5× Rotary Encoder Module
5× Potentiometer cap