Aluminum Alloy Knob: Aluminum knob cap measures 15 mm diameter with 16.5 mm height. encoder knob provides smooth tactile feedback and enhances device aesthetics with metal finish 5V Working Voltage: 5V rotary encoder delivers 20 per rotation for precise control. Low-voltage module ensures safe operation in DIY electronics and prototyping projects Bidirectional Counting: Rotation encoder module counts forward/reverse without limits. 360 degree rotary encoder module tracks position changes accurately for motor controls and instrumentation 5-Piece Complete Kit: 5 encoder modules include matching black knobs for multi-device projects. Full rotary encoder provide spare parts for , repairs, or simultaneous installations Instant Reset Function: Reset button encoder returns to zero with quick key press. Programmable rotary module simplifies calibration and restarts counting from initial state effortlessly, Manufacturer: PokFhgur