Operating voltage: DC 10V-45V,It is recommended to use DC32V power supply switch power supply.The use of high-speed optical coupling 6N137, ensure high speed without losing step.The use of high current, high voltage TB6600HG new chip, there are low-pressure shut-off, overheating parking and over-current protection circuit, short-circuit protection and increased compared to TB6560.Automatic half current function. And a semi-automatic flow switch, easy to use.Using common anode input mode, there are two input terminals, wiring more convenient.The rated maximum output reaches: 4.5A.Suitable for 42.57,8 two-phase/four-phase/four-wire/six-wire stepper motors within 4.2.Automatic half-flow function.Subdivision: full step, half step, 1/4 step, 18 step, /1/16 step, big 16 subdivisionColour:silver + greenMaterial:pvc + aluminumSize:80 x 50 x 29mmPackage Contents:1 x TB6600HG moduleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.