Hobbypower A4988 StepStick Stepper Motor Driver Module Heat Sink for 3D Printer Reprap Pack of 5 pcs 1 Hobbypower Strap

Key Features: Intelligent chopper control, automatically select the correct current decay mode (fast decay or slow decay) -Over-temperature thermal shutdown, under-voltage lockout, cross-current protection -Automatic current decay mode detection / selection Internal UVLO -Mixed with slow current decay mode -Low power synchronous rectification -Crossover-current protection Thermal shutdown circuit -3.3 and 5v compatible logic power Thermal shutdown circuit Background fault circuit Load short circuit protection -Five optional step modes: Full, 1/2, 1/4, 1/8 Specifications: A4988:20*15*11mm(LWH) Heat Sink: 9*9*5mm(LWH) Weight: 0.8 ounces Color: Red Package Included: 5 * A4988 Step Stick Stepper Motor Diver Module+5 * Heat Sink