Aegis’ multifunction 5-in-1 electrical tester completes insulation resistance, line/loop, continuity, phase rotation, nontrip loop, RCD and voltage testing. It features large-scale integrated analogy circuits, digital circuits and a microcomputer chip combination.

Commercial Electric's 2-in-1 dual-check tester has a 50–1,000V AC noncontact voltage detector on one end and a GFCI outlet circuit analyzer on the other.