① DC&AC power supply: voltage range :DC15V-DC90V/AC15-50V ② Phase Current: 2.4A-7.2A ③ typical voltage: DC20V-DC90V ④ accuracy Optional: 2,4,8,16,32,64,128, 5,10,20,25,40,50,100,125 ⑤  Input signals TTL compatible⑥ pulse stops over 100ms, chart current automatic halved, reducing the motor overheating in many occasions  ⑦ bipolar constant-current  Chopper, so that the same motor can output higher speeding  and power ⑧ matching motor: 42,57,86 (4-wire, 6-wire, 8-wire motors) ⑨ Dimensions: 151 × 100 × 50 (mm)