Bests & Worsts Reviews from Amazon

After reading a few too many "positive" reviews on this product, I thought I would add my two cents as a electrical engineer whom designs and builds super computer facilities. While I could say more, the KEY factor that is over-shadowed by the CHEAP price associated with this product is the fact that its "simulated sine wave" is actually a square wave. Square waves pound your PC power supplies with an extraordinarily poor quality of power. In addition, given this unit's output Power Factor, less than 0.53 (where PF = Watts/VA), it is as priced, IMO, a piece of junk. Yet, given its price and bogus CEG Warranty, many consumers are attracted to purchase a product that lulls them into a false sense of security while this unit (in UPS mode) destroys your PC's power supplies - and in the event of a CEG Warranty claim, because the unit will "no doubt" test fine, the consumer LOSES the claim when it was this UPS that caused the failure. In my professional opinion, ALL COMPANIES that promote CEG Warranties (or similar) should be required to offer a 35% discount to any consumer who elects to REJECT said CEG Warranty from the date of purchase. In the absence of an alternative solution, I find no remedy for every consumer who has ever been worked over by companies like CyberPower after filing a CEG Warranty (or equivalent) claim. Sadly, similar warranties are often promoted by UPS companies that I have specified and installed on my projects. I have seen 225 KVA UPS systems (a few orders of magnitude larger than this unit) offer $10MM (million) warranties that have never found their equipment to be the fault of the problem. T4USD