The electrical current is not standardized in Brazil. In Rio and Sao Paulo it is 110 or 120 volts, 60 cycles AC. In Manaus and Salvador it is 127 volts. Recife and Brasilia have a 220 volt service. Most sockets are for round two-pin plugs.
4 and 5 star hotels will provide adapters if required. If you will be using electrical equipment it is advisable to bring an adapter with you.
