The Omron K3MA-J 24VAC/DC is a process meter — a panel-mount indicator that displays a process variable (temperature, pressure, flow, level) from a 4-20 mA or similar analog transmitter. It is part of the K3MA-J series, a compact digital panel indicator line. Rated for 24 VAC/DC supply, it fits into standard control-panel cutouts and is used across industrial lines wherever a local readout of a loop-powered signal is needed — from temperature baths to pressure vessels.
Because it is a mature part, supply is steady through distribution.