Electrical sockets (outlets) in Iran usually supply electricity at between 220 and 240 volts AC. The electrical sockets are one of the two European standard electrical socket types: The "Type C" Europlug and the "Type E" and "Type F" Schuko. If your appliance's plug doesn't match the shape of these sockets, you will need a travel plug adapter in order to plug in. Travel plug adapters simply change the shape of your appliance's plug to match whatever type of socket you need to plug into. If it's crucial to be able to plug in no matter what, bring an adapter for both types.