The M3.96-145 AC4L is a 5-digit display for measuring high AC voltage signals TRMS up to 600 VAC and a visual limit value monitoring via the display. Configuration is done via 4 front panel push buttons or via the optional PC software PM-TOOL. Optional interfaces RS232/RS485, 2 analog outputs, one digital input and up to 8 setpoints are available. Selectable software functions and a direct limit value adjustment in the operating mode complete the modern device concept.