This Printed Circuit Board Assembly Requires A 120V Power Supply And Can Work With Any Duplex Digital. It Is Used On The M-1 Systems. Replacement Option For: 50973, 51686, 51692, 51786, 54091, 611154, 9710-15, B2Dgdpr2A, Bh50D, Bsev50, Bsun50D, Cat100R1A, Cat100R1B, Cs5000R, Grdeltr1A, H50Dr1A, H50Dr2A, Hpl1000R1C, Hs50R1B, Hs50Ric, Lb102R1A, Lb102R1C, M1R1B, Mas200R1B, Mas225R1A, Mas225R1B, Mil75R1B, Q2002R1A, Ws75R1B Specifications Category: Circuit Boards Subcategory: Printed Circuit Boards (Pcb)