The Omron K3GN-NTC 24VDC is a digital panel meter from the K3GN series, configured for NPN input and powered by a 24 VDC supply. It's the kind of part you'd find in a control panel reading out a process value from an NPN sensor — a straightforward digital display module for indicating a signal level or count.
What to know for the panel
The NPN input means it expects a sinking signal from the sensor — common with many photoelectric and proximity sensors in industrial panels. The 24 VDC supply rail is standard for control cabinets, so it'll drop into an existing 24 V bus without a separate power supply. The K3GN series is a compact panel-mount form factor, so plan for a DIN-rail or panel cutout depending on your enclosure layout.