
I agree with the previous reviewer for the highest possible joule rating (except for $200 industrial units) and the 4000 joule rating. I have no reason to doubt Bestek, but other imported electronics such as walkie-talkies, batteries and flashlights, was sold with extremely overpriced information about transmission distances, battery capacity in mAh, etc. and lumens. Would like to hear from EE or anyone else what the maximum joule ratings possible are for consumer products under $100. This extension looks trustworthy. It is currently certified by ETL/Intertek (London) according to UL 1363, according to the case. . The Revain listing for Bestek extenders shows that they are FCC and ETL certified. From what I could find online, Intertek seems to be as reputable as UL. These power strips appear to be of the same quality as high end Tripplite, Monster, APC, Kensington, Panamax, Belkin, and other surge protectors. that I've bought for computers and audio/video equipment over the years, although I believe that most major brands promise high quality. about 2100 joules. I have only positive impressions of Bestek products. Your Portable International Travel Converter has been fantastic for traveling in Asia. It saves space by integrating 220 to 110 conversion, surge protection, and multiple outlets into one unit, occupying only one outlet. Others on the same trip with cheap converters experienced a crisis. I trust Bestek with my energy sensitive goodies. Your Portable International Travel Converter has been fantastic for traveling in Asia. It saves space by integrating 220 to 110 conversion, surge protection, and multiple outlets into one unit, occupying only one outlet. Others on the same trip with cheap converters experienced a crisis. I trust Bestek with my energy sensitive goodies. Your Portable International Travel Converter has been fantastic for traveling in Asia. It saves space by integrating 220 to 110 conversion, surge protection, and multiple outlets into one unit, occupying only one outlet. Others on the same trip with cheap converters experienced a crisis. I trust Bestek with my energy sensitive goodies.

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