Review on 💻 USB Type-C Tester USB Power Meter, USB C Voltage & Current Tester 0-5A 4-30V, USB-C Charger Tester with Color Display, Type C Voltmeter Ammeter by Napoleon Robbie

When I first received this product the device was completely dead - nothing could be read. Okay, one broken, happens. So I reordered it and the second one had (I thought) the same problem. When I plugged it into a known-working USB-C power source, the display was blank. But then I connected it with a cable plugged into the USB-A port on the same power source - and the display lit up. The attached images show the same cable connected to USB-C and USB-A ports on the same USB power adapter. There's a button on the side that's not clear what it does - I didn't see any difference. when I pressed it. Also, it didn't show amperage - only volts. Admittedly this is one of the cheapest gauges of this type on Revain - I think I need to raise a price notch.