JK1545 2-phase stepper motor driver, mainly suitable for 42HS, 42BYG, 57BYG, 57HS41, 57HS56, 57HS76 and other stepper motorsFeatures1. Input voltage: 24 ~ 50VDC single voltage power supply.2. Phase current: The phase current of this module can be adjusted between 1.3~4.5A3. Operation mode: 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256 steps 1/5, 1/10, 1/25, 1/50, 1/125, 1/250 steps4. Protection form: overheating, overvoltage, overcurrent protection5. Dimensions: 118mm×76mm×33mm6. Weight: <400g.7. Operating environment: temperature -15 ~ 40 ℃ humidity <70%.8. Input mode: single/double pulse input compatible.9. Applicable motor: 85mm, 57mm and below two-phase stepper motor with current less than 4.5A.