A non-contact phase-rotation tester using magnet-backed, non-metallic leads so technicians can check rotation direction without exposing bare metal to live conductors. LED indicators show clockwise/counter-clockwise sequence and live-phase status, backed by an audible beeper that sounds steadily on a reversed phase, and brightness is adjustable for outdoor visibility; it's rated CAT III 1000V / CAT IV 600V for 75-1000V AC systems. This unit ships with a NIST-traceable calibration certificate.