Review on ⚡️ DROK 090187: Waterproof DC-DC Volt Buck Converter Step-Down Regulator 8-50V to 5V 3A Power Supply Module with Micro USB Adapter Connector by Toby Galbraith

As a power source, the device worked perfectly. The RF interference was so severe that only the strongest local VHF stations could cut through the hiss. I tested this by running the unit with the ignition off and the interference was so bad that no FM station could be picked up. When I unplugged the device, all stations sounded loud and clear again. This destroyed analogue, digital and digital HD-FM transmissions. Changing the position of the floor didn't change the effect. It works out? Yes. However, I have to remove it from the car due to a radio interference issue.