CTYRZCH New Dual VNH2SP30 Monster Moto Shield Module Stepper Motor Driver 30A16V For Arduino Voltage max: 16V; Maximum current rating: 30 A; Practical Continuous Current: 14 A Maximum PWM frequency: 20 kHz MOSFET on-resistance: 19 m (per leg). Current sensing available analog pin. Undervoltage and Overvoltage shutdown; Thermal Shutdown