Features:1. M542C V2.0 is a high performance microstepping driver based on pure sinusoidal current control technology. 2. The drive motor can run less quietly, with lower heating, smoother motion, and higher performance on most drives.3. Suitable for driving 2-phase and 4-phase hybrid stepping motors.4. Cost effective, with high speed performance5. Power supply voltage up to + 50 VDC6. Output current up to 4.2A7. With self-adjusting technology, pure sinusoidal current control technology8. Pulse input frequency up to 300 KHz. TTL compatible and optically isolated inputs9. Hexadecimal optional resolution, binary system up to 25,600 steps / turn10. Support PUL / DIR and CW / CCW mode11. With short circuit, over voltage, over current protectionSpecification:Condition: 100% Brand newDrive Model : M542CMotor Model: 57HS21AProduct Name: Stepper motorScope of Application: CNC industryStatic Moment: 2.1N.MRated Current: 5AStep Angle: 1.8°Package List:1 x Driver1 x Motor