Product Overview
The MIFARE Classic 4K (S70) 13.56MHz Blank RFID Printable Card is a high-capacity contactless smart card designed for secure identification, access management, and data storage applications. Manufactured by do rfid reader manufacturer, this card integrates the NXP MIFARE Classic 4K chip, offering 4096 bytes of user memory across 40 sectors. Operating at 13.56 MHz with a read range of up to 10 cm, it communicates via the ISO/IEC 14443-A protocol at 106 kbps. The card is supplied as a blank PVC card in standard CR80 size (85.6 mm x 54 mm x 0.8 mm), making it ready for custom printing and encoding. System integrators, project contractors, and distributors choose this card for its ample memory, reliable encryption, and compatibility with existing NFC and RFID infrastructure. The factory ensures stable production capacity and batch consistency for large-scale deployments, supporting OEM customization and bulk supply agreements.
Product Advantages
- Large User Memory: 4096 bytes organized into 32 sectors of 4 blocks and 8 sectors of 16 blocks, providing flexible data storage for complex applications such as multi-zone access control, loyalty points, and transit fare structures.
- Proven Security: Built-in CRYPTO1 encryption secures data transmission and access control, reducing the risk of unauthorized cloning or data tampering in commercial and industrial environments.
- Broad Compatibility: Works with standard ISO/IEC 14443-A readers and NFC-enabled devices including the ACR122U, allowing seamless integration into existing security and identification systems.
- Print-Ready Surface: The PVC material supports dye-sublimation and thermal transfer printing using printers from Zebra, Epson, Canon, and similar brands, enabling on-demand card personalization.
- Durable Construction: Waterproof PVC material withstands daily wear in access control, employee ID badges, and outdoor ticketing environments, reducing card replacement frequency.
- Factory-Default Access Keys: Pre-configured with A/B key FF FF FF FF FF FF, simplifying initial programming and testing during project deployment.
Key Features
- Operating Frequency: 13.56 MHz (HF RFID)
- Chip Type: NXP MIFARE Classic 4K (S70)
- User Memory: 4096 Bytes (40 sectors: 32 sectors of 4 blocks + 8 sectors of 16 blocks)
- UID Size: 4 Bytes
- Read Range: Up to 10 cm (dependent on reader antenna geometry and environment)
- Data Transfer Rate: Up to 106 kbps
- Communication Protocol: ISO/IEC 14443-A
- Card Dimensions: 85.6 mm x 54 mm x 0.8 mm (CR80 ISO standard)
- Material: PVC
- Factory Default Keys: A/B key FF FF FF FF FF FF
- Encryption: CRYPTO1 for data transmission and access control
- Printing Compatibility: Dye-sublimation and thermal transfer printers (Zebra, Epson, Canon, etc.)
- Weight: 0.007 kg per card
Technical Specifications
| Parameter | Value |
| Operating Frequency | 13.56 MHz |
| Chip Type | NXP MIFARE Classic 4K (S70) |
| User Memory | 4096 Bytes |
| Memory Organization | 32 sectors × 4 blocks + 8 sectors × 16 blocks |
| UID Size | 4 Bytes |
| Read Range | Up to 10 cm |
| Data Transfer Rate | 106 kbps |
| Communication Protocol | ISO/IEC 14443-A |
| Card Dimensions | 85.6 mm × 54 mm × 0.8 mm |
| Material | PVC |
| Factory Default Key A/B | FF FF FF FF FF FF |
| Encryption | CRYPTO1 |
| Printing Method | Dye-sublimation, thermal transfer |
| Weight | 0.007 kg |
Industrial Applications
The MIFARE Classic 4K card is deployed across multiple sectors where reliable contactless identification and data storage are required.
- Access Control: Used in office buildings, warehouses, manufacturing plants, and restricted areas. The 4K memory supports multiple access zones, time schedules, and user credential storage on a single card.
- Public Transportation Ticketing: Suitable for metro, bus, and toll systems requiring fast transaction processing (106 kbps) and secure fare deduction. The card meets ISO/IEC 14443-A standards for interoperability with standard transit readers.
- Loyalty Programs: Retailers and hospitality businesses use the card to store customer points, visit history, and reward tiers. The blank PVC surface allows full-color brand printing.
- Cashless Payments: Deployed in cafeteria, vending, and event payment systems where contactless transaction speed and encryption are essential.
- Employee Identification Badges: Corporates and government institutions issue these cards as combined ID and access credentials. The card supports photo printing and data encoding on the same chip.
- Parking Management: Used for entry/exit control and fee collection. The card UID is used for vehicle-to-card association.
- Hotel Key Cards: Hospitality properties use the card for guest room access, elevator control, and ancillary service charging.
- Event Management: Concerts, conferences, and exhibitions use the card for attendee identification, session tracking, and cashless top-up.
OEM / ODM Manufacturing Support
do rfid reader manufacturer provides comprehensive OEM and ODM services for the MIFARE Classic 4K card. Customers working on large-scale access control rollouts, transit system deployments, or corporate identification projects can request custom card designs, including logo printing, serial numbering, barcode or QR code encoding, and sector pre-initialization. The factory supports custom chip encoding and locking to meet specific project security requirements. OEM customers benefit from dedicated production lines, consistent batch quality, and confidential handling of card data and keys. For ODM projects, the engineering team works with buyers to define card layout, memory mapping, and printing specifications. Contact info@dorfidreader.com to discuss custom requirements.
Factory Production Advantages
The production facility behind do rfid reader manufacturer operates with stable manufacturing capacity, enabling consistent delivery for both small pilot orders and large-scale deployments. Key production advantages include:
- Stable Production Capacity: The factory runs multiple production lines for PVC card lamination, chip embedding, and final inspection, supporting order volumes from hundreds to hundreds of thousands of units.
- Batch Consistency: Every production batch undergoes dimensional checking, read-range testing, and memory verification to ensure all cards perform identically across a deployment.
- Fast Lead Time: Standard blank card orders are manufactured and dispatched within short timeframes. Custom printing and encoding add minimal lead time due to integrated production workflows.
- Quality Control: Cards are tested for read/write reliability, antenna integrity, and surface finish before packing. Sample testing is performed on each production batch.
- Export Experience: The factory ships to distributors, system integrators, and project contractors across multiple countries, with experience in international packaging and documentation.
- Long-Term Supply Stability: Direct partnership with chip suppliers ensures continuity of MIFARE Classic 4K chip availability for ongoing projects and repeat orders.
Bulk Supply & Project Deployment Support
Wholesale buyers and project contractors benefit from tiered pricing based on order volume. The card is available in packages of 1, 10, 200, 600, and 1000 pieces, with discounted unit pricing for larger quantities. For deployments exceeding 1000 units, contact do rfid reader manufacturer for custom pricing and delivery scheduling. The factory supports just-in-time delivery for phased project rollouts, allowing buyers to receive cards in batches while maintaining consistent chip version and card quality. System integrators can request pre-encoded cards with specific sector data, UID locking, or custom key structures to reduce on-site programming time. Distributors are offered protected pricing and dedicated stock allocation for ongoing wholesale cooperation.
Frequently Asked Questions
What is the difference between MIFARE Classic 1K and MIFARE Classic 4K?
The MIFARE Classic 4K offers 4096 bytes of user memory across 40 sectors, while the 1K version provides 1024 bytes across 16 sectors. The 4K card is suitable for applications requiring more data storage, such as multi-zone access control, detailed loyalty programs, or combined ID and payment functions.
Can this card be used with any NFC phone?
The card operates on ISO/IEC 14443-A and is readable by most NFC-enabled smartphones running Android or iOS. However, full read/write access requires compatible NFC applications and correct authentication keys. The factory default keys are FF FF FF FF FF FF.
What printers are compatible with this blank card?
The PVC surface supports dye-sublimation and thermal transfer printing. Compatible printer brands include Zebra, Epson, Canon, and similar card printers that accept CR80-sized media.
Is the card rewritable after encoding?
Yes, the MIFARE Classic 4K card supports read/write operations. Sectors can be read, written, and rewritten provided the correct authentication keys are used. Sectors can also be locked to prevent further modification if required by the application.
What is the typical lead time for bulk orders?
Standard blank card orders are typically manufactured and dispatched within 5 to 10 working days for quantities up to 10,000 pieces. Custom printing, encoding, or packaging may add additional days. Contact info@dorfidreader.com for specific delivery timelines.
Do you support custom key structure and sector pre-initialization?
Yes. do rfid reader manufacturer supports custom key programming, sector pre-initialization, and UID locking as part of OEM manufacturing services. Buyers can provide memory maps and key configurations for factory programming prior to shipment.
Can I get a sample before placing a bulk order?
Samples are available for purchase in single-unit packages. For larger sample requests for testing and evaluation, contact info@dorfidreader.com to discuss sample pricing and shipping.
What is the minimum order quantity for wholesale pricing?
Wholesale pricing is available starting from 200 pieces. Further volume discounts apply at 600 and 1000 pieces. For quantities above 1000, contact do rfid reader manufacturer for custom quotation.