RFID keyfob Mifare classic 4k blue

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  • Model: RFID keyfob
  • Chip:NXP Mifare classic 4k
  • Material: ABS
  • Frequency: 13.56Mhz
  • Reading Range: 2~20cm (Related to reader performance and working environment)
  • Production time:1-7Days*( Depending on how complex and customized
    the printing job is.)
  • personalization:custom RFID keyfob printed with your logos, numbering or almost anything else you may require


Welcome to RFID Tag Maker Factory!

We are thrilled to introduce our latest product – the RFID keyfob Mifare classic 4k. As a leading RFID key fobs company, we are committed to delivering high-quality, innovative, and practical solutions, and this product stands as a prime example of our dedication.

Innovative Design, Distinctive Appearance: The design of the RFID keyfob Mifare classic 4k seamlessly blends modern aesthetics with cutting-edge technology, giving you both functionality and style.

Powerful Performance, Intelligent Chip: Our pride, the NXP Mifare 4k chip, empowers this product with robust performance and intelligent capabilities. With its ample storage capacity, multiple independent usage areas, and advanced security mechanisms, it offers the ideal solution for your access control needs.

Versatile Applications, Wide Relevance: The RFID keyfob Mifare classic 4k isn’t limited to high-volume transactions alone; it excels in domains such as transportation ticketing, attendance management, parking facilities, and loyalty programs, providing convenience and efficiency across various sectors.

Customization Options, Diverse Solutions: We provide two choices to cater to different client requirements. The Pre-Defined option comes with a pre-programmed 10-digit ID, while the Writable option allows users to define a personalized 10-digit ID, providing flexibility to suit your needs.

High Quality, Unwavering Reliability: RFID Tag Maker is committed to delivering high-quality products, and the RFID keyfob Mifare classic 4k is no exception. Rigorous quality control and testing ensure that you receive a highly reliable product that stands the test of time.

Enhanced Security, Double Waterproofing: In our production process, we employ a dual-layer waterproof design – a combination of glue covering and ultrasonic pressing – ensuring that the product remains resistant to moisture and external factors in various environments.

Diverse Variety, Personal Expression: With a range of styles and colors to choose from, you have the freedom to select the perfect match that aligns with your taste and requirements.

Our mission is to provide unparalleled access management solutions, and the RFID keyfob Mifare classic 4k embodies this vision. It’s not just about access control; it’s a novel experience. Join RFID Tag Maker to experience the seamless fusion of innovation, quality, and service!

MIFARE Classic 4K is a contactless smart card technology that operates at 13.56 MHz frequency and complies with ISO 14443A standard. It has 4 kilobytes of EEPROM memory, which can store data for various applications such as access control, public transportation, loyalty cards, and more. Here are some of the main parameters of the MIFARE Classic 4K chip:

  • Unique identifier: Supports 4-byte NUID or 7-byte UID, optional random ID
  • Data transfer: 106 kbit/s
  • Data integrity: 16-bit CRC, parity, bit coding, bit counting
  • Anticollision: Allows to operate more than one card in the field simultaneously
  • Security features: Encryption keys and access conditions for each sector, mutual three-pass authentication using CRYPTO1 algorithm
  • Memory structure: 4 KB EEPROM, divided into 40 sectors (32 sectors of 4 blocks and 8 sectors of 16 blocks), each block consists of 16 bytes
  • Data operations: Supports read/write operations, value operations (increment/decrement/transfer/restore), and memory overwrite protection
  • Write endurance: 200,000 cycles
  • Data retention: 10 years
  • Operating distance: Up to 100 mm depending on antenna geometry and reader configuration
  • Operating temperature: -25°C to +50°C

Technical Specifications

  • Dimension: 43.7×30.5×5.3mm
  • Operating Frequency: 13.56 MHz
  • Memory capacity: 4
  • Chip type: MIFARE Classic 4K
  • Waterproof: Yes

– Silk-screen printing with logo
– Laser Engraved Number
– Ink jet printed serial number
– Chip encoding
– Rings or thread is optional

Chip Available:
– 125KHz 18000-part2: EM4200, TK4100, etc.
– 125KHz ISO11784/785: T5577, EM4305, Hitag1, Hitag2, Hitag S256, etc.
– 13.56Mhz ISO15693: ICODE SLI, Tag-it 2048, etc.
– 13.56Mhz ISO18082: NTAG210, NTAG212, NTAG213, NTAG215, NTAG216, Topaz512, etc.
– 13.56Mhz ISO14443A: MIFARE Classic ®, MIFARE Ultralight®, MIFARE®DESFire®EV1, MIFARE Plus®, etc.
– 860Mhz-960Mhz ISO/IEC 18000-6C: UCODE, MONZA, HIGGS, etc.

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