HW-040 360 Degrees Rotary Encoder Switch Module 5V Brick Sensor Development Board with Knob Cap Brick Sensor Switch Module. Feature: 1. Countless Rotational Possibilities: The rotary encoder accurately counts the number of pulses generated during both clockwise and counterclockwise rotations without any limitations. 2. Highly Accurate Incremental Encoding: This encoder converts rotary displacement into a series of digital pulse signals, allowing for precise control of angular displacement. 3. Dual-Channel Output with Direction Detection: The incremental encoder produces two-phase square waves, typically referred to as Channel A and Channel B, with a phase difference of 90°. 4. Precision Determined by Mechanical and Electrical Factors: The accuracy of an incremental encoder depends on both mechanical and electrical factors. 5. Satisfaction Guarantee: We strive to provide each customer with the highest standard of customer service to ensure you have a pleasant shopping experience. Specification: Model: HW-040, Working voltage: 5V, Material: PCB+brass, Main color: black, Pulse number: 20, Weight: 10g, Size: 31 * 29 * 19mm/1.22 * 1.14 * 0.75in