Phase Sequence Tester CAT Safety Rating CAT III 600V Display Screen Type LCD Display Type Digital For Voltage Range 40 to 850V AC Includes (3) 4 ft Test Leads (3) Alligator Clips Carrying Case Maximum Frequency 400 Hz Minimum Frequency 15 Hz Testing Functions Phase Rotation Alert Type Light Battery Chemistry Not Applicable Battery Size Not Applicable Circuit Connection Type Direct For Phase Three Includes Batteries Not Applicable Manufacturer Warranty Length 1 yr