R425 – AO845A Analog Output S/R HART 8 ch Description Description R425 – AO845A Analog Output S/R HART 8 ch (0) 4..20mA, 12bit, RLmax 750 ohm. Single or redundant. Loop supervised DI function. Use Module Termination Unit TU810, TU812, TU814, TU830, TU833, TU842, TU843, TU852. Related products ABB - 1.3 800xA 6.1 Hardware (3BSE088708/E)3BSE082896R1 Read more ABB - 1.3 800xA 6.1 Hardware (3BSE088708/E)3BSC630197R1 Read more ABB - 1.3 800xA 6.1 Hardware (3BSE088708/E)3BSE081636R1 Read more