Product Overview

The TK4100 EM4100 125KHz Blank RFID ID Printable Card is a low-frequency proximity card designed for cost-effective identification and access control applications. Manufactured by DO RFID Reader, this card is built around the widely adopted TK4100 chip, which is fully compatible with EM4100 and EM4200 protocols. It serves as a reliable, read-only credential for system integrators, access control contractors, and attendance system deployers who require a stable, mass-producible ID card for large-scale projects.

As a manufacturer, DO RFID Reader produces these cards in bulk quantities with consistent read performance, ensuring that project contractors and distributors receive cards that perform identically across every batch. The printable PVC surface allows organizations to add branding, employee photos, serial numbers, or barcodes using standard card printers, making it suitable for both new deployments and replacement card programs.

Product Advantages

System integrators and industrial procurement teams select this card because it solves specific operational challenges. The 125 kHz frequency is widely supported by existing access control panels, gate systems, and time attendance terminals, eliminating compatibility concerns during system upgrades or expansions. The read-only architecture means that once the chip is programmed during manufacturing, the card cannot be altered, providing a fixed identifier that prevents credential tampering or unauthorized rewriting.

For distributors and wholesalers, the advantage lies in supply stability. DO RFID Reader maintains production capacity to fulfill orders ranging from sample quantities to hundreds of thousands of units. This manufacturing consistency allows procurement teams to plan long-term inventory without worrying about specification drift or availability gaps. The card’s ISO standard size (CR80) fits into existing badge holders, card printers, and slot readers without mechanical modification.

Key Features

• Reliable 125 kHz Operation: The TK4100 chip operates at the widely adopted low frequency of 125 kHz, ensuring broad compatibility with most proximity readers used in commercial access control and time tracking systems.
• EM4100/EM4200 Compatibility: Fully interoperable with EM4100 and EM4200 protocol-based readers, making it a drop-in replacement for existing card systems without reader upgrades.
• 64-Bit Read-Only Memory: Each card carries a unique 64-bit factory-programmed identifier that cannot be altered after production, providing fixed, traceable credentials for audit trails and personnel tracking.
• Durable PVC Construction: Manufactured from standard PVC material that resists daily wear, moisture, and bending. The card maintains its shape and readability through prolonged use in environments such as office buildings, factory floors, and outdoor gate entry points.
• Printable Blank Surface: The card accepts dye-sublimation and thermal transfer printing from commercial card printers including Zebra, Epson, and Canon models. Organizations can print employee photos, company logos, barcodes, or serialized numbers directly onto the surface.
• ISO Standard Dimensions: At 85.6 mm x 54 mm x 0.8 mm, the card conforms to CR80 ISO size, fitting into standard badge holders, card slots, and storage racks.
• Waterproof and Portable: The PVC material provides basic water resistance, allowing the card to function after incidental exposure to rain, spills, or cleaning processes.

Technical Specifications

Industrial Applications

This RFID card is deployed across multiple commercial and industrial scenarios where user identification and access rights must be managed efficiently.

• Access Control Systems: Used by commercial building managers and security contractors to issue credentials to employees, visitors, and contractors. The 125 kHz frequency ensures compatibility with existing door controllers and turnstile readers.
• Time and Attendance Tracking: Factories, warehouses, and office environments use these cards to record employee clock-in and clock-out events. The read-only identifier prevents employees from altering their ID number, maintaining accurate attendance records.
• Asset Identification: Libraries, equipment rental companies, and IT asset managers attach or issue these cards for tracking tools, books, or hardware. The printable surface allows labeling with asset numbers alongside the RFID identifier.
• Parking and Entry Management: Parking facility operators issue these cards to registered users for automated gate entry. The durable PVC construction withstands repeated use in vehicle dashboards or glove compartments.
• Hotel and Hospitality: Hotels and resorts issue these cards as guest room keys or facility access credentials. The blank surface can be printed with room numbers and branding on-site.
• Gift Card and Loyalty Programs: Retailers and event organizers use these cards as membership or stored-value credentials. The low unit cost makes them suitable for promotional giveaways and mass distribution.
• Identification Badges: Enterprises and government institutions combine these cards with printed photo IDs for employee badges, student IDs, or visitor passes.

OEM / ODM Manufacturing Support

DO RFID Reader offers OEM and ODM customization for wholesale buyers, system integrators, and distributors who require cards tailored to their specific project needs.

• Chip Encoding: Each TK4100 chip can be factory-programmed with customer-specified ID ranges, ensuring that the card numbering aligns with your existing database structure.
• Custom Printing: We can print logos, serial numbers, barcodes, or QR codes directly onto the PVC surface during manufacturing, reducing your post-processing steps.
• Packaging Customization: Bulk orders can be packaged in custom quantities, shrink-wrapped bundles, or labeled boxes as required by your distribution channels.
• Design Support: Our engineering team can review your specifications and provide pre-production samples for approval before mass manufacturing begins.

Factory Production Advantages

As a dedicated RFID card manufacturer, DO RFID Reader operates a production facility that focuses on consistency, yield rate, and delivery reliability. Every batch of TK4100 cards undergoes functional testing to verify read range and protocol compliance before shipment. This quality control process ensures that integrators receive cards that perform uniformly across all units.

Our production line is configured for both small-batch sample runs and large-scale manufacturing campaigns. For project-based procurement, we can commit to fixed delivery schedules that align with your deployment timeline. Long-term wholesale agreements benefit from priority production slotting and stable pricing across order cycles.

Export experience allows us to handle international shipping documentation and customs requirements, reducing delays for overseas distributors. We maintain buffer stock of raw PVC sheets and TK4100 chip inventory to protect against supply chain disruptions.

Bulk Supply & Project Deployment Support

Large-scale deployments require more than just product availability. DO RFID Reader supports project integrators and distributors with batch traceability, consistent card orientation, and uniform print surface quality. For projects involving 10,000 cards or more, we offer phased delivery schedules that match your installation milestones.

Wholesale buyers benefit from tiered pricing that reflects genuine volume savings. Orders placed for 600 pieces or more receive reduced per-unit costs, with further discounts available for quantities exceeding 1000 units. This pricing structure allows procurement teams to budget accurately for multi-phase rollouts.

For system integrators replacing an existing card population, we can match the chip ID sequence format currently in use, minimizing database migration work. Technical support is available during the integration phase to verify reader compatibility and answer application-level questions.

Frequently Asked Questions

Q: Is the TK4100 chip compatible with all EM4100 readers?
A: Yes. The TK4100 chip uses the same 125 kHz protocol as EM4100 and EM4200 chips. Most low-frequency proximity readers that support EM400x or EM410x standards will read this card without any configuration changes.

Q: Can I print on both sides of the card?
A: The PVC blank surface supports single-sided or double-sided printing depending on your card printer model. We recommend confirming with your printer manufacturer for specific media handling capabilities.

Q: What is the typical read range of this card?
A: Read range depends on the reader antenna size and power output. Typical ranges are 5-15 cm with standard commercial access control readers and up to 30 cm with high-power proximity panels.

Q: Can you encode specific ID numbers for my project?
A: Yes. We offer factory encoding services for OEM orders. You can specify the starting ID number and sequence pattern. MOQ requirements apply for custom encoding runs.

Q: How should I store bulk quantities of blank cards?
A: Store in a cool, dry environment away from direct sunlight and extreme heat. PVC cards may warp if exposed to temperatures above 60°C for extended periods. Keep cards flat in their original packaging to prevent bending.

Q: What is the lead time for a 10,000-piece order?
A: Lead time varies based on current production load and customization requirements. Standard bulk orders typically ship within 10-15 working days after sample approval. Contact us for current lead time estimates for your specific quantity.