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