Eaton SVX adjustable frequency drive,50HP,NEMA Type 1/IP21,480V,FR7,3PH,EMC H,A/N keypad,No brake chopper,Ext. I/O Card O: 6 DI,1 ext +24 Vdc/EXT +24 Vdc,1 AI(mA iso) 2 AO(mA iso) 1 ext +24 Vdc/EXT +24 Vdc,Com O: RS-232 with D9 connection