The NTM-2 is a replacement for Sigma 9270, Prime, Versatile VMI 2000 and Weschler meters. Industry standard housing 2.84”W x 5.7"H x 2"D available in metal only. This unit houses up to 2 channels 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.