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

This variable transformer works great, AC at the wall is about 121V for me so it can go up to 150VAC. I'm not entirely sure if this autotransformer is isolated as the description says. I've always assumed autotransformers are not isolated, and a continuity test between output ground and my output ground showed continuity. After checking this and checking the internal wiring, I replaced the analog voltmeter on the front panel with a digital voltmeter. Adding a 110V -> 8V transformer inside and it worked fine. I wish there were more digital voltmeter autotransformers because I want a more accurate reading of the output voltage. The wires inside are the correct gauge but are soldered to the terminals and not all of the solder joints were the best but I took care of that when I installed the voltmeter.