This 3P phase meter is designed to detect the state of open phase and the sequence of phase, the sequence of phase is indicated by light-emitting diode (LED) and buzzer. Multifunctional design, non-contact detection safety measurement, with phase sequence measurement live power detection and disconnection detection phase detection function. With automatic shutdown and buzzer indicating function. It is suitable for household measurement, electrical appliance maintenance, factory measurement, building measurement, electrical pump overhaul, etc. Features: Compact and lightweight, easy to carry, fast and accurate testing, with high safety. It can be used to detect the state of open phase and the sequence of phase, the sequence of phase is indicated by light-emitting diode (LED) and buzzer. ​Multifunctional design, non-contact detection safety measurement, with phase sequence measurement live power detection and disconnection detection phase detection function. With automatic shutdown and buzzer indicating function. No battery design, it can also work normally without a battery and is easy to use. Equipped with an indicator light to indicate, convenient and easy to understand. Wear-resistant button design, one button on, one button off. The instrument is equipped with three test pens, fisheye needle or wire connector diameter of not more than 10 mm pins can be connected to the alligator clips. With alligator clips, the terminals of the control panel are easily involved, guaranteeing reliability and safety. It is suitable for household measurement, electrical appliance maintenance, factory measurement, building measurement, electrical pump overhaul, etc. Specifications: Name: Phase Meter Material: plastics Item size: 85 * 64 * 23mm / 3.35 * 2.52 * 0.91in Package size: 170 * 110 * 50mm / 6.69 * 4.33 * 1.97in Package weight: 228g / 8.04ounce Packing List: 1 * Phase Meter 3 * Clips 1 * Manual 1 * Storage Bag