Review on ⚡ Beleeb 5 Amp Auto AC Variable Voltage Regulator - Max 500VAC, 120VAC Input, 0-120V/130VAC Output by Darth Calder

When unpacking there is a knock in the case. In the light of a flashlight I saw that the screw turned freely inside. After disassembling the case and looking around I couldn't find where the screw could go, no obvious screw holes, no loose wires. There were also no missing screws or loose wires in the control panel. Rebuilding and unit testing is fine. An extra screw must have been left inside the device during production. I suggest that each of these Chinese devices be thoroughly tested by each vendor before being plugged in. These are good hobby devices, but it's best to play it safe and test them extensively beforehand.