Canon S400 User Manual page 15

Do not use a power supply voltage other than that supplied in the country of purchase.
Do not attempt to plug the power cord into the power outlet or unplug the power cord when
your hands are wet.
Always push the plug all the way into the power outlet.
Using the incorrect voltage could cause a fire or electric shock. The
correct power supply voltage and frequency is:
USA/Canada: AC 120V, 60Hz
This could cause an electric shock.
A loose or poorly inserted plug could cause a fire or electric shock.
Safety Precautions
Introduction 15