Lascar dpm 750 series 35 digit lcd voltmeter module with backlight lascar dpm 750s eb w this panel meter features a low drift bandgap reference circuit that ensures accurate readings over a wide temperature range a negative rail generator enables the meter to measure a signal referenced to its own power supply gnd additional features include 5v dc operation an enhanced contrast negative mode lcd and white led backlighting the unit is supplied with a plastic mounting bezel and there is a