Brand Keyes Model N/A Quantity 1 Color Red Material FR4 Features Stepper motor driver board Specification Diameter: 28mm; Voltage: 5V; Step angles: 5.625 x 1/64; Speed reduction ratio: 1/64; Power consumption: About 5V / 63mA; Load pull in frequency: >500Hz; Load pull out frequency: > 900Hz; 5-wire 4-phase can be driven with an ordinary ULN2003A chip Application Great for DIY project English Manual/Spec Yes Other Using ULN2003A Darlington power stepper motor driver chip; Comes with step motor standard interface; Directly plug when using; With 3mm screw holes easy to install; VCC and GND power input range is 5V. Packing List 1 x Board