Quotes:
"Tunisian women often wear outfits that would normally be seen on the streets of any major world city (tight jeans, slinky top), but they do so while showing traditional modesty by exposing virtually no skin. Arms are covered down to the wrists, collars go to the neck (cleavage is non-existent) and a head scarf may be worn. Western women visiting can minimize attention by selecting clothes that minimizes skin shown. V-necks are fine if another layer with a higher collar is worn underneath"
and
"Tunisia is a Muslim country, and dress code is important, particularly for females. Whilst a lot of skin (even topless) is tolerated on beaches and within hotel complexes, a modest amount of exposed skin may be frowned upon outside these areas.
Be aware that the further south one travels, the more conservative Tunisia becomes. While most women wear western clothes in the Capital (which has a mix a Mediterranean, European and Arabic cultures), the south of Tunisia is practically devoid of any lingering European influence and is thus far more traditional".
Source:
http://wikitravel.org/en/Tunisia
Tunisia has the same electrical supply as the UK (230V at 50Hz) with 'Type C' (non-earthed) sockets
http://electricaloutlet.org/type-c
or 'Type E' (earthed) ones:
http://electricaloutlet.org/type-e
Chris