The table below summarises the plug types, voltage and frequency of electrical current in both Mauritania and Iran.
|Frequency of electrical current||50Hz||50Hz|
Mauritania uses Plug Type C.
No adaptor needed
Iran uses Socket Type C, which is the same as the plug type of your appliances from Mauritania. You will not need an adaptor.
The voltages found in Mauritania (220V) and Iran (230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Mauritania and Iran is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.