Fangrui Product Details Dc 9-42v Power Supply, 12-30v Power Supply Is The The Control Signal Input Voltage Is 3.3-24v Universal (no String Resistance Required) Subdivision Accuracy 1-32 Subdivision Optional Output Current 4.0a H-bridge Bipolar Constant Current Drive The Upgraded Version Of Tb6600 Is A Driver Suitable For 57/42 Type Two-phase Hybrid Stepping Motor With Phase Current Below 4.0a. Set 7 Kinds Of Subdivisions (1/2a/2b/4/8/16/32) Through 6-bit Dip Switch And 8 Gear Output Current (0.5a/1.0a/1.5a/2.0a/2.5a/2.8a/3.0a/3.5a) Widely Used In Various Small And Medium-sized Automation Equipment And Hardware, Such As: Engraving Machine, Marking Machine, Cutting Machine, Laser Phototypesetting, Plotter, Cnc Machine Tool, Crystal Grinding Machine, Automatic Assembly Equipment, Etc. The Application Object Is 57 Stepper Motors And 42 Stepper Motors With A Torque Of 1.8n.m And Below. 1. Input Signal High-speed Optocoupler Isolation 2. Built-in Temperature Protection And Overcurrent Protection 3. Automatic Half Flow To R