What the Category Tells You
The K3NX-VD1-C1: Filing under Measurement and Indicators > Panel Meters means this is a front-panel numeric display, not a PLC module or a loop-powered indicator. It requires a separate power supply (typically 24 VDC or 100–240 VAC, depending on the variant) and accepts analog or digital inputs via screw terminals on the rear. The panel cutout is standard for the K3NX family, so a replacement swaps in without re-drilling the enclosure.