As a new industrial and scientific buyer, I found these tamper-resistant outlets to be a great addition to my facility. As my tests showed these outlets offer reliable electrical connections and prevent unauthorized access to electricity. The sleek design makes them easy to install and blends in well with any room .However, the outlets must be firmly secured or they may become loose over time. Overall, i am pleased with my purchase and would recommend them to others in need of tamper-proof outlets..