Specifications:
Size:
A4988:20*15*11mm(LWH)
Heat Sink: 9*9*5mm(LWH)
Weight: 0.8ounces
Color: Red

Features:
-Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
-Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection
-Automatic current decay mode detection / selection
-Internal UVLO
-Mixed with slow current decay modes
-Synchronous rectification for low power dissipation
-Crossover-current protection
-Thermal shutdown circuitry
-3.3 and 5 V compatible logic supply
-Thermal shutdown circuitry
-Ground Fault Circuit
-Load short-circuit protection
-Of five optional step mode: full, 1/2, 1/4, 1/8 and 1/16

Package Included:
5*A4988 StepStick Stepper Motor Diver Module
5*Heat Sink