Modern devices must have a protection circuit to provide damages in case of connecting with wrong polaraity.
Especially US and Europe devices a carefully build. Imagine a wrong polaraity causes a device getting hot an your house is burning down…
Their are special ICs designed for that. This ICs also care for a constant voltage level …
Reading your device with too high voltages is not possible because different voltage categories have different plugs which don’t fit.
Enjoy your device
