When someone wants to buy a UPS there are a lot of question to be answered: - How many VA ? - Is modified sinewave ok or pure sinewave is essential? - high priced APC & Eaton or more reasonably priced powerwalker and cyberpower - There are no reviews online which show oscilloscope outputs so the buyer can decide which ups should buy. Linus, there is an opportunity for a review here, I think.... Please like this post, so mods forward it to Linus Media Group reviewers.