Product Overview

The MIFARE Classic 4K (S70) 13.56MHz Blank RFID Printable Card is a high-capacity, ISO-standard contactless smart card designed for industrial access control, public transit ticketing, loyalty systems, and secure identification deployments. Manufactured by do rfid reader manufacturer, this blank PVC card is built for system integrators, wholesale distributors, and project contractors who require a reliable, programmable RFID credential with extended memory and read/write flexibility.

With 4096 bytes of user memory organized across 40 sectors, the MIFARE Classic 4K chip supports multi-application deployments where one card manages access, payment, and identity functions. The card operates at 13.56 MHz and follows the ISO/IEC 14443-A protocol, ensuring broad compatibility with standard NFC readers and RFID terminals used in commercial and industrial environments.

Purchased in bulk from do rfid reader manufacturer, this card supports OEM customization, custom printing, and encoding services, making it suitable for large-scale projects where batch consistency and fast lead time are critical.

Product Advantages

• Extended Memory Capacity: 4096 bytes (40 sectors) enable multiple application storage on a single card — suitable for combined access, payment, and identification use cases.
• CRYPTO1 Security: Hardware encryption protects data transmission and access control, reducing the risk of cloning or unauthorized reading in secured environments.
• Broad Reader Compatibility: Complies with ISO/IEC 14443-A, working with standard 13.56 MHz NFC readers and RFID terminals commonly deployed in access control and transit systems.
• Printable Surface: Blank PVC surface accepts dye-sublimation and thermal transfer printing (Zebra, Epson, Canon compatible), enabling custom branding, employee photos, or membership artwork.
• Durable Construction: PVC material resists water, bending, and daily wear, making the card suitable for badges worn by staff, visitors, or transit users over extended periods.

Key Features

• Chip type: NXP MIFARE Classic 4K (S70)
• User memory: 4096 Bytes (40 sectors — 32 sectors of 4 blocks and 8 sectors of 16 blocks)
• UID size: 4 Bytes
• Operating frequency: 13.56 MHz
• Communication protocol: ISO/IEC 14443-A
• Data transfer rate: up to 106 kbps
• Read range: up to 10 cm (depending on antenna geometry and reader power)
• Dimensions: 85.6 mm x 54 mm x 0.8 mm (CR80 ISO standard)
• Material: PVC
• Factory default A/B key: FF FF FF FF FF FF
• Compatible with printers using dye-sublimation or thermal transfer printing

Technical Specifications

Industrial Applications

Access Control Systems: Security integrators and facility managers deploy the MIFARE Classic 4K card for employee and visitor badges. The 40-sector memory allows segmentation — one sector for door access, another for time tracking, with encryption protecting each application.

Public Transportation Ticketing: Transit authorities issue these cards as stored-value fare media. The 4K memory supports balance storage, trip history, and multi-ride passes within a single credential, reducing card replacement frequency.

Loyalty and Membership Programs: Retail chains and hospitality businesses use printed MIFARE Classic 4K cards as membership credentials. The blank PVC surface accepts full-color branding, while the chip stores points balances, tier levels, and transaction logs.

Secure Identification Badges: Government agencies, hospitals, and corporate campuses require credentials that combine printed photo ID with contactless functionality. These cards support both visual identification and electronic authentication on a single durable platform.

Cashless Payment and Vending: Cafeterias, laundromats, and internal retail outlets integrate these cards for closed-loop payments. The CRYPTO1 encryption prevents balance manipulation, and the 4K memory accommodates multiple tariff tables or product catalogues.

OEM / ODM Manufacturing Support

do rfid reader manufacturer provides full OEM and ODM customization for the MIFARE Classic 4K card. Buyers can specify custom chip encoding, sector key structure, and UID programming to match existing infrastructure without migration overhead.

OEM customers can receive blank cards with pre-programmed memory layouts, reducing on-site configuration time during large-scale rollouts. For distributors and system integrators, customized packaging and private-label branding are available to maintain consistency with existing product lines.

ODM support includes custom antenna tuning and form-factor adjustments where volume justifies dedicated tooling. Engineering teams work directly with procurement partners to ensure the final product meets the mechanical and electrical requirements of the target reader ecosystem.

Factory Production Advantages

As a dedicated do rfid reader manufacturer, our factory maintains stable production capacity for high-volume RFID card orders. Production lines run ISO-controlled processes with inline quality inspection to verify memory integrity, antenna continuity, and print surface consistency across every batch.

For wholesale buyers and project contractors, batch consistency is essential. Each production run uses the same PVC lot, chip batch, and printing parameters to ensure color matching and performance uniformity across thousands of cards. This eliminates field issues caused by card-to-card variation in read sensitivity or print quality.

The factory supports fast lead times for standard blank cards, with programmed and printed variants requiring slightly longer but coordinated scheduling. Export documentation, customs-compliant packaging, and consolidated shipping are handled directly by the production team.

Bulk Supply & Project Deployment Support

System integrators deploying across multiple sites benefit from bulk purchasing with consistent sector mapping and key structure. Instead of programming each card individually on-site, the factory pre-configures memory layouts based on the integrator’s master key set, reducing on-site labor and programming errors.

Distributors ordering volumes of 600 or 1000 pieces receive unit pricing that supports competitive resale margins while maintaining product quality and factory support. For larger deployments — 10,000 cards or more — dedicated production slots and staged delivery schedules are available to match phased rollouts.

Project contractors working in access control, transit, or campus identification can request sample batches for compatibility testing against their existing reader infrastructure before committing to full production. Technical support for reader integration and card programming is available throughout the procurement cycle.

Frequently Asked Questions

What is the memory capacity of the MIFARE Classic 4K card?
The card provides 4096 bytes of user memory divided into 40 sectors (32 sectors of 4 blocks and 8 sectors of 16 blocks), supporting multi-application storage.

Is this card compatible with standard NFC readers?
Yes, the card follows ISO/IEC 14443-A and works with all standard 13.56 MHz NFC readers and RFID terminals, including those used in access control and transit systems.

Can the card be printed with custom artwork?
Yes, the blank PVC surface accepts dye-sublimation and thermal transfer printing using printers from manufacturers such as Zebra, Epson, and Canon.

What are the factory default keys?
The default A/B key is FF FF FF FF FF FF. These keys can be changed during programming or pre-configured by the factory for OEM orders.

How should I buy in bulk for a project deployment?
Contact do rfid reader manufacturer at info@dorfidreader.com with your required volume, sector layout, and printing specifications. Sample batches are available for compatibility testing before full production.

Does the factory support OEM custom encoding?
Yes, OEM customers can request custom UID programming, sector key configuration, and memory layout pre-configuration to match existing infrastructure.