Review on 💡 Black OPTI-UPS AVR SS2000 Home AVR Series Automatic Voltage Regulator - 6-Outlet (2000 VA / 1000 W) by Talapon Blackburn

This is a cost effective solution to stabilize the voltage in the 120V ANSI C84.1 range when the input voltage is outside of this range lies. This is an automatic step-up transformer that doesn't distort the waveform except maybe for switching. According to the input voltage of 120 V +/- 15% (18 V), this device must have an input voltage of at least 102 V and at most 138 V, as only one on/off switch minimizes the number of incorrect settings. The 50Hz/60Hz rating is useful abroad. The weight is reasonable.