Review on XINCOL AC-DC SMPS Power Supply Adapter for LED Strip Light - AC110V/220V to DC12V 42A 500W Switched Mode Transformer Driver by Dawson Schmidt

I received the device and was happy to use it as a replacement for my old device. I kept looking for the voltage selector to select the correct voltage and was able to find it everywhere. I assumed it was an automatic voltage sensor. Unfortunately I connected it to 220 volts and the device burned out! Only later did I discover that the voltage switch had a yellow sticker stuck over it. Why? Why wasn't there anything in the document? money down the drain.