2.Output current:1.3A-4.5A

3.Mircostepping：1(1.8º)、1/2、1/4、1/8、1/16、1/32、1/64、1/128、1/256

               1/5、1/10、1/25、1/50、1/125、1/250

4.Protect form : Overheated  protect, lock automatic half current ,error connect protect

5.Dimensions：118mm×76mm×33mm

6.Weight：<300g.                                         

7.Working environment：Temperature-15～40℃ Humidity<90%。

I/O Ports：
1、           VCC+：DC power positive pole

Note:Must guard against exceeding 50V,

so as not to damage the module

2、GND：DC power cathode

3、A+、A-：Stepping motor one winding

4、B+、B-：Stepping motor other winding

5、PUL+、PUL -：Stepping pulse input+5V (Rising edge effective ,         rising edge duration >10μS)

6、DIR +、DIR-：Stepping motor direction input, voltage level touched off,high towards, low reverse

7、ENA+、ENA-: motor free