Feature:1. CURRENT: The stepper motor driver adopts 9V42V DC power supply, H bridge bipolar constant phase current drive. Eight output currents up to 4.0A.2. 2 PHASE STEPPER MOTOR FORWARD AND REVERSE: Stepper motor driver module can control 2 phase stepper motor forward and reverse, with 12, W1 2, 2W1 2, 4W1 2 phase excitation.3. GUARD FORM: Stepper motor driver adopts energy saving semi automatic current locking function, built in temperature guard and over current guard, under voltage guard, anti reverse connection.4. WIDELY USED: Stepper motor driver is suitable for many kinds of for Nema 17, 23, 24 stepper motors, which can be used in various machines, such as XYZ working table, labeling machine, engraving machine, pick and place equipment, 3D printers and so on.5. SEMI ENCLOSED CASE: The semi enclosed case of the stepper motor CNC controller can be adapted to more severe environments, providing energy saving semi automatic current lockout function.Specification:Item Type: Stepper Motor DriverMaterial: MetalModel: TB6600Voltage: DC 9-42VCurrent: 4A (Maximum)Applicable Stepper Motor: for 42, 57, 86 Type 2 Phase 4 Phase (4 Wire 6 Wire 8 Wire)Applicable: for CNC 3D printer.Package List:1 x Stepper Motor Driver