... 0.5-8A 1-256 microstepping input voltage:AC110-220 fit for NEMA17/23/34,special for NEMA43 CW1108 stepping motor drive* Low ... *Perfect protection and Phase controlled circuit break functions Interfac port for input voltage: AC supply,connect 110V~220VAttention: We recommend that use ... two wires,and connect the other four wires with driver For 4-phase,8-wire motor, winding and pairwise parallel ...