1、 What is the conversion socket
 Conversion socket, also known as multi-function socket, is a kind of power socket that can convert one plug into another. It is a necessary thing for people to travel abroad. So, what are the features and functions of this socket?
 First of all, the conversion socket can convert the fixed plug into a telephone power plug, a computer power plug, a USB plug, and it is small in size and convenient to carry and use.
 Secondly, the conversion socket can also convert different power plugs in different countries into power plugs in another country. Even if you live in a foreign hotel or hotel, even if you are a stranger, even if the socket of the country you travel cannot match your own electronic equipment, you can easily charge it.
 Finally, there are mainly two kinds of multi-functional conversion sockets, one is simple conversion socket; The other is to adapt to stable voltage while changing sockets. In addition, this kind of socket is commonly used by international hotels, overseas education institutions, travel agencies and ticket centers in addition to tourists.
 2、 National standards for conversion socket
 The conversion socket can not only convert two legs into three legs, but also convert 10A into 16A, which is undoubtedly a blessing for friends who like to travel abroad. But before using it, you must understand the standards of the adapter socket in various countries.
 Chinese and Australian standards: The plug standards in these two countries are the same, with three flat plugs.
 1. Standards of the United States, Canada and Mexico: the three countries use the same set of standards, and the plug is characterized by one round and two flat.
 2. European Standard: This standard has a wide scope of application, and the plug is a double hole round head. This socket standard is mainly used in France, Norway, Sweden, China, Denmark, Finland, Italy, Poland, the Netherlands, Portugal, etc.
 3. British standards: British and European standards are different. The plug has three square heads and two holes, but it is mostly used for electric shavers. British Standards also apply to India, New Zealand, Pakistan and Hong Kong, China.
 4. South African standards: mainly used in South African countries. Most plugs are three hole round heads.
 In fact, in addition to the different standards of the conversion socket plug in different countries, the corresponding voltage of the conversion plug in each country is also different. For example, the plugs in Albania, Algeria, Afghanistan, Argentina and other countries adopt European standards, and the voltage is 220V, if in China; Luxembourg, Rwanda, Romania and other countries also use European standard plugs, but the voltage is 230V.
 3、 How to select the conversion socket
 Although all the multi-function switching sockets have the same functions, their models are different, and the quality of products sold in different stores is also different. Therefore, it is also necessary to understand the following tips when selecting a conversion socket.
 1. Understand your needs
 The conversion socket is usually used for the mode that the local plug needs to be converted into the charging plug of your equipment. So before purchasing, you should know which equipment you have and their power, and then choose the appropriate socket.
 2. Choose a formal purchase channel.
 Converting sockets can generally be purchased in hardware stores and electrical stores, but whether the purchase channels selected are regular will directly reflect on the quality of sockets. In order to avoid buying fake and low-quality goods, it is more important to choose formal channels than anything else.
 3. Learn to identify product quality.
 Select appropriate channels to understand the needs. The next step is to determine whether the quality of the socket is qualified by looking at the appearance, structure, logo and test socket. The appearance of the genuine conversion socket is smooth and clean, and the product package has 3C certificate, so there is no problem in trial use.
 4、 How to use the conversion socket
 After the conversion socket is bought back, in order to verify the practicability of the socket, we usually try it in advance. This can not only prevent you from buying useless products, but also ensure that you will not be unable to charge normally due to the quality problem of the socket after going abroad. So, how to use the adapter socket?
 In fact, the use of the adapter socket is very simple. First, distinguish the specifications of sockets in different countries, and then select sockets with appropriate specifications; Then, before use, conduct a simple insertion test on the socket to ensure that the plug can contact well and is not loose or tight after insertion.
 Although the use method is simple, the following aspects should be paid attention to when using:
 1. Select a socket with appropriate voltage. If the power of electrical or electronic products is high, try to choose a socket that can load high power;
 2. When using, do not plug or unplug the plug and socket with steam or water drops, otherwise it may cause short circuit of the plug or even electric shock to the human body;
 3. It cannot be used in high temperature environment. The changeover socket is mostly made of plastic. If the temperature is too high, the panel will become soft, and the panel will be easily burnt or even ignited.
 5、 Does the conversion socket need 3C certification
 3C certification is a national mandatory product certification system and a production system formulated by the country to ensure product quality and personal safety. In China, only products passing this certification can be regarded as qualified products. So, does the conversion socket need 3C certification?
 According to the new national standard, all sockets must pass the national 3C certification, and the conversion socket is no exception. Therefore, when purchasing sockets, you can check whether there is a sign of "3C certification" on the outer packaging bag of the product. This is also one of the ways to distinguish a socket. In addition, the following methods can also be used to determine whether the quality of the socket meets the national standards:
 1. Check whether the socket has a protective door: the socket is equipped with a protective door to avoid electric shock caused by the accidental insertion of sharp substances, which can ensure the safety of electricity use.
 2. Look at the material of the socket panel: the panel of the new national standard conversion socket must be flame retardant material, which can make the socket not burn after being heated, or it can automatically extinguish 30 seconds after burning.