Omron K3HB-SSD 100/240VAC Panel Meter, Status Change Detecti

The Omron K3HB-SSD 100/240VAC is a panel meter dedicated to status change detection — it monitors a signal line and indicates when the state transitions, rather than displaying a continuous analog value. This makes it a fit for applications where you need to log or annunciate a discrete event, like a limit switch opening or a valve position changing, rather than measure a process variable.