We have not tested any further, may have unknown issues we are not aware of. See all item photos for the condition of the unit. Please feel free to message us with any questions you may have. Thank you for checking out our listing.Doing so is against US and international law. Unless otherwise stated above, all auctions include 30 day DOA guarantee. This item is in the category "Home & Garden\Home Improvement\Electrical Supplies\Power Strips, Extension Cords & Adapters\Power Strips & Surge Protectors". The seller is "ntc_tech" and is located in this country: US. This item can be shipped worldwide.