How to select the switch is a very strict problem. After selection, it will definitely save a lot of attention in later use, so we must pay attention to selection.

（1） Appearance

Generally good products have smooth appearance, no burr and peak. Imported high-quality PC materials are used for color and materials, with good flame retardant performance. Although some products have bright and clean surface and seem to be coated with a layer of oil, they are pale in color and thick in texture. Such materials have poor flame retardant performance, which has buried fire hazards for household electricity. The style and color of the switch should be consistent with the overall style of the interior. For example, the overall tone of the interior decoration is light color, it should not choose black, brown and other dark switches.

（2） Hand feel

Most switches with good quality are made of high-grade materials such as bullet proof glue. They have high fire-proof performance, moisture-proof performance and anti-collision performance. The surface is smooth. When purchasing, you should consider the feeling you feel. With the touch, you can preliminarily determine the material of the switch and ask the dealer. Generally speaking, the performance of products with not smooth surface and thin and crisp feeling is not reliable. The panel of good switch socket shall be free of bubbles, scratches and stains. The handle of the switch is light but not tight,

Lightly press the switch function parts, the lighter the skateboard sound, the smoother the hand feel, and the better the quality is if the rhythm is strong; otherwise, the sound is not pure, dynamic and astringent when opening and closing, and the quality is poor if there is a midway intermittent state. The socket of the socket shall be equipped with a protective door, and the plug shall be inserted with a certain force and cannot be inserted with one foot.

（3） Portion size

When buying a switch, you should also weigh the weight of a single switch. Because the weight of a single switch will be large only if the copper strip in the inner part of the switch is thick alumni record, and the copper strip in the inner part is the most critical part of the switch. If it is alloy or thin copper strip, it will not have the same weight and quality.

（4） Brand

Encourage you to choose famous brands. Because the switch quality is related to the normal use of electrical appliances, and even the convenience of life. Many dealers have expressed the same view, that is, the switches or sockets produced by many small manufacturers are unreliable, which will not take long at all, and it is obviously very troublesome to replace them frequently; however, most famous brands will make effective commitments to consumers, such as "15 years available", "12 years service life guaranteed", "10000 times of continuous switching", etc.

（5） Services

As far as possible to the regular manufacturer designated stores or sales points to buy, and ask for shopping invoices, so as to ensure that you can enjoy future after-sales service.

（6） Identification

Pay attention to the marks on the base of switch and socket: including CCCE and rated current and voltage. At present, the rated current of the commonly used household general switch in the market is 16a, the socket current is 10a, and the socket of air conditioner and water heater is 16A. The good products clearly identify the available current intensity, while the identification of the inferior products is vague, the data is exaggerated, and it is impossible to determine whether the rated current of the identification can pass through safely without worrying and without full house smoke.

（7） Packaging

There should be a clear address and telephone number of the manufacturer on the product packaging surface, with the production date, instructions for use and certificate of conformity.