Description: Tthe output current is infinitely adjustable to meet your various application requirements Automatic half current function. And the semi-automatic flow switch is also available, easy to use The use of high-speed optical coupling 6N137 ensure high-speed without losing step printed on the back panel are subdivided setup instructions Used to increase the heat sink, good heat dissipation Output short-circuit protection, the use of mind Using common anode input mode, there are two input terminals, wiring more convenient Specifications: Material: Meatal and plastic Size: 50*82*35 mm (Width * Length *High ) Color: green and white Operating voltage DC 10V-45V. DC32V switching power supply is recommended high-speed optical coupling 6N137, ensure high speed without losing step Toshiba's new high current, high voltage TB6600HG new original chip, there are low-pressure shut-off, overheating parking and over-current protection circuit, short-circuit protection and increased compared to TB6560 Rated maximum output reached: ± 4.5A For 4.2A 42,57,86 within the two-phase / four-phase / four-wire / six-wire stepper motor Automatic half current function Subdivision: full step, half step, 1/4-step, 1/8-step, 1/16-step, up to 16 segments Package includes: 1 x TB6600 4.5A CNC Single-axis stepper Motor Driver Board Controller