Panel-mounting indicators with a 5-digit display for the measuring of high AC voltage signals TRMS up to 600 VAC and a visual limit value monitoring via the display. Configurate this device via an optional PC-software or via 4 front keys. Optional available are one digital input, two analog outputs, the interfaces RS232/RS485 and up to 8 switching points. To complete this modern device concept, these devices offer a direct limit value adjustment in operating mode and selectable software functions, too. Of course they are available in different colours and in two standard assembly dimensions.