The Extech by FLIR noncontact tester checks phase sequence and status on 3-phase power sources. Essential LEDs indicate orientation CW or CCW and whether each phase is live. Beeper indicates the phase detected and if it is reversed. Durable housing has a magnet to attach to an AC distribution panel for ease-of use. 3 built-in 30test leads have color-coded fully insulated alligator clips.

EXTECH PRT200 Non-Contact Phase Sequence Tester
$69.58