... )Current Control: Constant, PWM controlMicrostepping: Full-, Half-, Quarter- and 16th-step (2)Photocoupler Isolation voltage: 2500 Vrms (min)Photocoupler Input current ... -board POT(2) adjustable through on-board DIP switchCommunication: 3-wire, Step, Direction, and Enable signalsHandling, Storage and Size:Cooling Type: Free ...