The NTM-F is a compact bargraph meter. Industry standard housing 3"W x 2"H x .5"D available in plastic only. The flat pack design requires no panel cutout (only a 3/8" hole). This single channel Bar-Digital meter 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.