The PRT200 is a non-contact phase sequence tester that tests up to 1000 VAC with visual/audible indication. The tester has a 45 to 65Hz frequency range, features adjustable Hi/Lo LED brightness switch for making measurements in dimly lit areas or sunlight, low battery warning and fully insulated alligator clips with wide jaws. The product has a CAT IV 600 Volt safety rating and is complete with a year warranty, three built-in 30 in. test leads with large color-coded alligator clips, 4 AA batteries, and a pouch case.