IDEAL® Motor Rotation Tester, 3-Phase, 100 to 600 VAC, 10 to 400 Hz, Neon Lamp LED Display, Safety Rating: 600 VAC CAT III, 1 to 600 VAC at 2 to 400 Hz Motor Rotation, 1 to 600 VAC at 2 to 400 Hz Phase Rotation, 100 to 600 VAC at 10 to 400 Hz Phase Voltage Present Indicator