Sine wave inverse power source

Specifications and electrical parameters:
1) Output wave: pure sine wave output (distortion ratio <4%)
2) Automatically controlled cooling fan
3) Output frequency: 50/60Hz±0.05%
4) Electromagnetic interference: FCC Class B
5) Working / environmental temperature: 0-50℃
6) Storage temperature range: -30 - 70℃
7) Power range: 500W, 800W, 1000-1500W