Clamshell 125Khz RFID Card

An ID card that operates at a frequency of 125Khz is called a 125KHz RFID card. If this card has a clamshell-shaped appearance, it is commonly known as a Clamshell 125KHz RFID card. These cards have an embedded 125KHz chip, such as AT5577, EM4200, TK4100, Hi-tag2, among others. These proximity access cards use RF induction technology to communicate with RFID readers and get powered by them. Clamshell ID cards have a thickness of 1.8mm, which is almost double the thickness of a standard credit card and are often referred to as thick cards.

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The clamshell 125Khz RFID card is designed to be contactless, featuring a microchip or IC nested within. The microchip is accompanied by a circular copper coil and an antenna. These components work collaboratively to facilitate data transfer. When the card is brought near a reader, the copper coil and antenna receive and transmit data to the microchip. Subsequently, the microchip processes the data and makes it available to the reader, allowing the authorized staff to access the necessary information. This ID card possesses a read function exclusively and is equipped with a 64-bit password that cannot be altered, thanks to the anti-rewrite feature. Additionally, the chip manufacturer assigns a fixed UID to each card, ensuring its unrivaled uniqueness worldwide, a characteristic that remains unalterable indefinitely.

The clamshell 125Khz RFID card is known for its ability to be read in a contactless way, even through obstacles such as water, wood, and organic materials. This makes it an ideal choice for various applications that require near distance and low speed, and only a small amount of data. As a result, 125Khz RFID cards are often used for access control, hotel locks, animal labeling, product management, attendance management at meetings, e-tickets, laundry management, club spending, logistics, subways, industrial automation, and more. These cards are extremely versatile and can be used in a variety of settings where contactless tracking and identification is required.

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Q: Why hotels prefer to use the AT5577 125Khz RFID cards as a hotel lock card?

A: Hotel 125Khz AT5577 blank card is a very important part of the hotel lock system, if replaced mechanical key, improved the efficiency of hotel management. In the past years, hotels used still mechanical door locks, there should be a large key box at the front desk. If the guest lost the mechanical key, the hotel must replace the locks, and keys, which had a very bad efficiency and experience for both of hotel and the guests. Now RFID hotel locks solved this big problem. Every card is blank, and can’t open any locks, after being issued by the encoder, card programmed by point function, like guest room key card, and staff card. There will be no problem with security or lost key.

Q: Are 125Khz RFID Card the high frequency?

A: No. 125Khz RFID Card is the low frequency smart card. But the high frequency for the smart card is 13.56Mhz.

Q: What is an EM card?

A: EM is a standard RFID technology to be used by many Nordic access control systems. EM4200 is the EM chip used with 125Khz today and is compatible with EM4102. EM uses a shorter read range of up to 20CM depending on the environment, reader, and antenna.

Q: How to find the difference between 125Khz and 13.56Khz from the card

A: The shape of the copper coil for the card is different. We just find a light to shine the card, and check the Cooper coil shape. If it is round, then it should be 125Khz. If the copper coil s rectangular, it should be 13.56Mhz.

Q: What is the lead time for 20,000pcs of at5577 printed cards?

A: It takes 6-8 days. If you are urgent to get it, we can arrange the urgent order to speed up and finish them within 4 days.

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