Choosing the right conversion plug (ปลั๊ก แปลง, which is the term in Thai) for a specific trip involves making a research on the outlets used in your destination(s) and buying the right ones to correspond with your plugs.

This article gives a rundown of helpful tips to remember when choosing a conversion plug:

Have in Mind the Limitations of Adapters

 An adapter’s only function is to align with the shape of a particular outlet; hence it won’t be effective in converting the voltage provided by that outlet. If you’re visiting a country whose outlets give a lower or higher voltage than your own, you will probably need to buy a converter in addition to your adapter.

Make a Research on Your Destination’s Voltage

 For each country that you intend travelling to, make an online research on the amount of voltage that their outlets give. Most countries use 220 and 240 volts range, while others use 100 and 125volts variety. Compare it with the voltage standard you have in your own country. A converter is not necessary if they align, but if by chance they are different, you will likely need one.

Study Your Devices’ Power Specifications

 Refer to each device that you are bringing and their owner’s manual.  The device should have a power supply label, or a manual’s index; you have to study the instruction.

Does Your Device Have a Single or Dual Voltage?

Products that usually get included in international travel often work with varying amounts of voltage, you don’t have to be in a hurry to buy a converter just yet. Check the recommended voltage specifications. A dual voltage device will work with both voltages stated there. However, for a single voltage, a converter is a must-buy before you can use it abroad.