Purchased 3 packs of 2, 6 total. 5 out of 6 installed, 3 out of 5 didn't work at all (check/reset function didn't work). 1 out of 5 didn't have a green light but still worked. I didn't even bother to install the other 1. Some reviews complained that if you mixed up the "Load" and "Line" inputs, the jack wouldn't work. This is perfectly normal, so I wasn't worried. The fact that the socket's main function (shutdown to avoid malfunctions) was not working made me give it 1 star. Rather spend a little more money and buy a more reputable brand.
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