The NTM-N is a replacement for the General Electric and Yokogawa AB30 AB40 DB30 DB40, Weschler Westinghouse K231 / 241, Dixson BEW51 / BEW51P, Modutec 4SB, Crompton 077 / 078 or any 4" ANSI style meter. The housing is an industry standard 4" ANSI switchboard available in plastic or metal. This single channel Bar-Digital meter/controller is available in loop (4-20mA), A.C. signal or external power to replace fit, form and function any analog or digital panel meter. Our Powerless (loop/signal) versions only consume <60mW, comparable to an analog meter! The external power series features over 30 signal conditioners.