Features:
75 to 1000VAC input voltage with 45 to 65Hz frequency range
LEDs indicate phase orientation (clockwise or counter-clockwise) and whether each phase is live
Beeper sounds intermittently when correct phase is detected and continuously if phase is reversed
Durable housing with back cover magnet for attachment to an AC distribution panel for easy measurement
Adjustable Hi/Lo LED brightness switch for making measurements in dimly lit areas or sunlight
Fully insulated alligator clips with wide jaws
Low battery warning
Complete with three built-in 30" test leads with large color-coded alligator clips, four AA batteries, and pouch case