CNC Router 3 Axis TB6560 Stepper Motor Driver Board Controller Features: 1-1/16 micro step setting and higher precision make it run more smoothly. 1.5-3A driving current and electrodeless is adjustable With relay output control, it can drive more external devices such as main shaft, water pump, oil pump and so on. Professional design, anti-interference and low heating power enable it drive stably. Motor at low speed crawl phenomenon, low noise and no resonance region. With closed high-speed photoelectric isolation, large capacity design, and two-stage signal processing, this product can protect user's computer and equipment comprehensively. 4 channel input control can be set limit, emergency stop, points, tool presetting and so on. Compatible with 2 phase-4 phase (4 line, 6 line, 8 line stepper motor) Specification: Weight: 550g Size: 18 x 11 x 4 cm Package included: 1 x 3 Axis TB6560 Stepper Motor Driver 1 x Parallel cable 1 x CD software 5 x Wire connectors