Up to 500kV, 50 Hertz Unit. Instead of you manipulating a hinged or clamp-type inductive pick-up, the patented LoadLooker electronically closes the loop for you. Its unique U-shape jaw senses the amperage present between its tines. The open-end design lets you check loads on components not accessible by other hot-line ammeters. Live-line-ready hotstick mount A standard fitting on the LoadLooker lets it mount on your insulated hotsticks just as any other universal tool. Your hot-line crews can begin using it immediately, in compliance with prescribed safe-working clearances for your system voltages. Simple pushbutton operation, direct-reading accuracy A single button controls the operation. Push it once to turn on the LoadLooker. Push it a second time and LoadLooker will display the word HOLD and continue to display the next reading it “sees” until you push the button to clear it.