The APLPV400 Apollo Process Voltmeter from Red Lion Controls is a panel-mount voltmeter that displays scaled DC process voltages without an external excitation source. It is powered from 115 VAC (50/60 Hz) and accepts input voltages up to ±25 V DC, presenting a 3‑1/2‑digit bipolar LED readout that shows a minus sign for negative inputs. Front‑panel span and offset controls let you map your process signal to the display, making it suitable for monitoring transducer outputs and other voltage signals in industrial panels.
