The NTM-9 is a replacement for General Electric GE 180 / Yokogawa 180, Weschler Westinghouse VX251 / VX252, Dixson BB101 / 202PV, Sigma 1151 / 1251, NES "6", Takemoto, Triplett, A&M / Weston 49 Series, Bowmar, Crompton 128 or any 6" bargraph meter. Industry standard housing 2.16"W x 6"H x 3"D available in plastic or metal. This unit houses up to 2 channel and 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.