Mini Stepper Motor Speed Controller 2-Phase 4-Wire 4-Phase 5-Wire Stepper Motor Driver Board Speed Controller DC 5V-12V for DIY. Features: Precise Control and Positioning, Low Power Consumption, Comprehensive Protection, Easy Integration, Compact Size. Specification: Origin: Mainland China, Motor Type: DC Motor, Driver Board Size: L*W*H 60*44*13mm/2.34*1.72*0.51in, Voltage Range: DC 5V-12V, Rated Current: ≤800mA, Power Reverse Connection Protection: Yes, Over-Current Protection: Yes, Overheating Protection: Yes.