UT219P is a handheld harmonic AC power clamp meter with an AC fundamental frequency of 1kHz. It can be used to measure parameters such as AC voltage, AC current, active power, apparent power, reactive power, power factor, phase angle, energy statistics, frequency, phase sequence, total harmonic distortion rate, and various harmonic components. It also has single-phase, three-phase three wire, and three-phase four wire measurement modes, equipped with Bluetooth communication function. The measurement data can be monitored and recorded through mobile phones or tablets, generating reports with professional standards. It has the characteristics of easy operation, stable performance, and accurate measurement. Widely used in industries such as power, railway, computer, transportation, banking, communication, medical, and industrial control for power equipment testing.