This drive is an upgraded version of the TB6600, the breakdown of heightening to 32 segments,for high segmentation purposes. Applicable : 42,57,86 type of 2-phase 4-phase (4-wire 6 wire line 8)9V-42V DC power supply;H-bridge bipolar constant-phase flow-;the maximum output current of 4.0A eight optional;up to 32 segments of six kinds of sub-modes available;the input signal is high-speed optical isolation;standard common anode single pulse interface;offline hold function;semi-enclosed chassis can accommodate more demanding environment; energy semiautomatic current lock function;built-in thermal protection and overcurrent protection.colour:blackMaterial:plasticPackage Contents:3 * motor driverOnly 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.