. It generates a lot of radio frequency interference. Your radio is useless while this device is on. This can interfere with your WiFi and other RF dependent devices. If it's important to you, look for power adapters with the FCC logo on the label. It's not like this. They shouldn't even be sold in the US if they don't qualify. This is FCC Part 15 law. Since there is no security, such things are sold. Since I'm listening to my radio, it's no use to me. I'll just throw them away. Beware.
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