How to buy a good quality access control card reader?

Note 1: Should I choose a domestic card reader or an imported card reader?

The real imported  access control card reader, the technology is relatively mature, the repair rate of the product is low, and the appearance design is more beautiful and attractive. The disadvantages are: the product is expensive, the service is not as timely as the domestic card reader, and the imported proximity card of the supporting brand must be used, imported Proximity cards are also more expensive. Unless the customer specifies the use of an imported brand reader, the author recommends using a domestic card reader, but you must choose a card reader provided by a manufacturer with good domestic quality, reputation and service. Domestic card reader The appearance of the card has also made great progress in the past two years, and it is about to keep up with the internationally popular styles. Imported card readers are 6-10 times the price of domestic card readers, and the price of imported cards is 10-20 times that of domestic cards. Domestically produced The core chips of card readers and cards are all processed with foreign radio frequency chips. China does not have the development and production capabilities of chips in this field. It is recommended to use model readers and card readers for imported card readers. Relatively speaking The price/performance ratio will be better. Many domestic card readers just affix a brand that does not exist in foreign countries, mark a country of origin, or have a fake certificate of origin. There are many things to buy dog meat with sheep's head, and the engineering company should pay attention to it. Don't spend wronged money and have not bought a good product, causing a lot of trouble.

Note 2: Should I choose an ID card reader or an IC card reader?
ID card reader is a common name for read-only non-contact IC cards, and IC card reader is a general term for readable and writable non-contact IC cards. The performance-price ratio and sensing distance of ID cards and ID card readers are better than IC Card and IC card reader. If it is only used for access control and time attendance or parking lot card, it is recommended to use ID card reader and proximity card. If you need to be compatible with non-fixed consumption card, you can only use IC card reader and induction Card. ID card market is more popular and cost-effective is EM card.

Note 3: Do not judge the quality of domestic card readers from the appearance alone.
Most domestic card readers use public molds, or copy the appearance of foreign readers. The mold is universal, anyone can buy the shell, so even if the reader of the same appearance may be produced by different manufacturers, the service and quality It is also different. The project company must have a detailed understanding of the card reader, not just from the appearance and price to distinguish it. It is recommended that the project company buy the card reader from the place where the access control controller is purchased, and the general access control controller manufacturer either Will support the sales or production of card readers with similar quality standards. So, how to judge the quality of a card reader? In my opinion, some domestic card readers use analog circuits to replace RF base station chips in pursuit of low production costs. The card reader has a large operating current and is easy to crash or be damaged. It is not recommended. It is recommended to use a card reader with an imported RF base station chip. Of course, you must also purchase a card reader from the manufacturer you previously purchased for more than half a year Use time and repair rate as well as the manufacturer's quality standards and reputation to make judgments. In addition, the card reader is a long-term use device, and the circuit design must be protected by an anti-crash circuit. This point should also be paid attention to. .

Note 4: Should I choose a sealed or unsealed card reader?
It is recommended to use an unsealed card reader. The reason is: even if the glue is sealed, the buzzer is still exposed, and water entering here will damage the card reader. The material used in the sealing glue is resin, which is generally used in China The manual sealant curing agent is used to mix unevenly. Domestic resin materials are cheap but of poor quality. They will have conductivity after long-term use, which will make the card reader run chaotic or crash. Imported resins are expensive. Domestic manufacturers are generally unwilling to use them. It costs more than a dozen yuan per card reader. In addition, the sealant is not suitable for the heat dissipation of the device, and it also has an impact on the performance of the card reader. Therefore, unless there is a special occasion, it is generally not necessary to use the sealant to read Card reader. For special occasions, some waterproof protection for the card reader is enough.