Phase Sequence/Motor Rotation Tester, CAT Safety Rating CAT IV 600V, Display Screen Type LCD with Backlight, Display Type Digital, For Voltage Range 50 to 700V AC, Includes (3) Alligator Clips, (3) Test Probes, Carrying Bag, Maximum Frequency 400 Hz, Minimum Frequency 16 Hz, Testing Functions Motor Rotation, Phase Rotation, Alert Type Not Applicable, Battery Size AAA, Circuit Connection Type Non-Contact, Features Durable Rubber Casing, Wireless Motor Rotation Detection on Running Motors