Voltage: Brazil uses 127V or 220V depending on region and building. Rio de Janeiro predominantly uses 127V, but newer buildings may have 220V outlets. Always check before plugging in devices.
Frequency: 60 Hz
Plug Types: Brazil uses Type N plugs (three round pins in triangular pattern). This is unique to Brazil. Some older buildings may have Type C sockets (two round pins).
Important: Universal adapters work but verify voltage compatibility. Most modern electronics (phones, laptops, cameras) support 100-240V and only need plug adapter. Hair dryers, straighteners, and other heating devices may require voltage converter if not dual-voltage.
Where to buy adapters: Available at airport shops, electronics stores, large supermarkets, and hotels (often limited stock). Better to bring from home. Cost approximately R$15-30.
USB charging: USB charging is standard voltage worldwide. Many modern hotel rooms have USB ports. Power banks useful for beach days and long sightseeing.