Phase Sequence Tester, CAT Safety Rating CAT III 600V, CAT IV 300V, Display Screen Type LCD, Display Type Digital, For Voltage Range 40 to 700V AC, Includes Industrial Sockets, Test Probes, Maximum Frequency 400 Hz, Minimum Frequency 15 Hz, Testing Functions Phase Rotation, Alert Type Not Applicable, Battery Chemistry Not Applicable, Battery Size Not Applicable, For Phase Three, Includes Batteries Not Applicable, Manufacturer Warranty Length 2 yr, Maximum Operating Temperature 104 Degrees F. This item has been restricted from sale in the following state (s): []