The table below summarises the plug types, voltage and frequency of electrical current in both Benin and Slovenia.
|Plug Types||E||C, F|
|Frequency of electrical current||50Hz||50Hz|
Benin uses Plug Type E.
The voltages found in Benin (220V) and Slovenia (230V) are not exactly the same, but the difference is tolerable, so you should not need a transformer.
The frequency found in Benin and Slovenia is exactly the same (50Hz). Timing devices and appliances that use motors will function as expected under this frequency.