Cheap And Discounts 5pcs/lot HW-040 360 Degrees Rotary Encoder Module with 15×16.5 mm Potentiometer Rotary Knob Cap for Arduino Brick Sensor Switch Wholesale. Buy Directly From Merchant Worldchips. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.