With the Beha-amprobe 2100-ALPHA voltage tester, you quickly and reliably verify that electrical circuits are de-energized before starting work. Clear led indicators display ac and DC voltage levels from 12 V to 690 V instantly, even if the batteries are completely drained. You effortlessly check phase sequence rotation in three-phase systems to prevent motor wiring mistakes and perform continuity tests on fuses and circuits. The switchable load via dual pushbuttons allows you to safely trip and test 10 mA or 30 mA rcd devices. Built with robust IP64 dust and splash protection and rated cat IV 600 V / cat III 690 V, this tool delivers dependable safety in every job.