cylewet 5pcs ky-040 rotary encoder module with 15×16.5 mm with knob cap for arduino (pack of 5) cyt1062 cylewet one round number of pulse: 20<br> working voltage: 5v<br> 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.<br> with the key on the rotary encoder, you can reset to the initial state, that is, counting from 0.<br> the material of knob cap: aluminium alloy<br> the specification of knob cap: diameter: 15mm/ 0.59in; height: 16.5mm/ 0.65in<br><br> <b>package includes:</b><br> 5× rotary encoder module<br> 5× potentiometer cap