Note however that some electrical appliances (my HP computer, electric tooth brush) do not fit into the outlet, impossible to load them. It seems that some outlets are slightly thicker and will not work with this adapter.
I just bought another adapter in the country and it works with the devices in question.
For the price, it is worth buying. But be aware that it may be to buy another brand to operate all your devices
Please also note: do not converted 220 of 110 volts. No problem however my side because my devices are compliant to both 110 and 220 v.