Description:  Stepper Motor Driver AC18-80V Drive Voltage 2 Phase Stepper Motor without Magnet.     Specifications:  Type: Stepper Motor.  Drive Voltage: AC18-80V.  Drive Current: adjustable below 6.0A.  Max. Pulse Response Frequency: 200KHz.  Size: 151*94*54mm.  Weight: 0.65kg.  Quantity: 1pcs.     Features:  - 32-bit DSP control, low noise and superior vibration performance.  - 16 constant torque microstep setting, up to 256 microsteps.  - Smooth and accurate current control, effectively reduce motor heating.  - When the pulse stops over 200ms, the motor current is halved.  - Excellent smoothness in low frequency microsteps.  - Optically isolated differential signal input, strong anti-interference ability.  - With over voltage, under voltage etc. fault protection.  - Small size, volume 151*94*54 (mm³), weight 0.65kg.  - Suitable for 57-86mm(NEMA23-34) 2 phase open-loop stepper motors.     Package Included:  1 X Stepper Motor