... equipment, and etc.Description:PSI Series UPS provides pure sine wave power for commercial, household and industrial applications. ... precision output.PWM technology, Pure Sine Wave outputPure sine wave output, suitable for all types of loading includes resistive load, ... Hz ±0.5Hz, subject to the mainOutput Wave Formpure sine waveWave Distortion≤ 3%Transfer Time≤ 4msProtectionoverload, short circuit, ...