The electricity voltage in Brazil varies between 110V and 220V depending on the location. Many hotels offer wall sockets in both voltages, and it is easy to find portable voltage transformers in construction shops.
Check the electrical voltage across the country
Below is the distribution of electrical voltage throughout the country:
The wall sockets in Brazil have the shape of a well, to make contact between the finger and the electrical current more difficult and avoid accidents. The plugs have a system that avoid overloading and heating and also provide better linkage with their terminals.
The adapter plugs can be easily found in construction stores or in the free shop stores at airports.