The Omron K3NR-NB2A is a 12–24 VDC-powered digital panel meter that displays the frequency of an input signal in a compact panel-mount package. Designed for control panels in automation and process monitoring, this Omron device provides a clear frequency readout directly on the panel. As part of the K3NR family, the NB2A variant is built to operate from a standard 12–24 VDC supply, making it suitable for integration into existing industrial power rails. Common applications include real-time monitoring of signal frequency in machine control, sensors and feedback loops, and other automation panels where a simple, verifiable frequency readout is required.
