Product Overview
The TK4100 EM4100 125KHz Blank RFID Business Card Name Thick Card is a purpose-built passive RFID credential designed for commercial access control, employee identification, attendance tracking, and asset identification deployments. Manufactured by DO RFID Reader, this read-only 125 kHz card combines the proven TK4100 chip architecture with a thicker 1.8mm PVC substrate, delivering enhanced physical durability for high-traffic environments where standard 0.8mm cards wear out prematurely. System integrators, facility managers, and industrial procurement teams select this card when they need a cost-effective, field-reliable RFID credential that integrates seamlessly into existing EM4100-based reader infrastructure without protocol conversion or middleware adjustments.
Product Advantages
Wholesale buyers and project contractors choose this thick RFID business card for three practical reasons: mechanical longevity, protocol compatibility, and predictable unit cost at scale. The 1.8mm thickness reduces edge delamination and cracking compared to standard card profiles, which directly lowers replacement frequency in daily-swiped access systems. Because the TK4100 chip operates on the widely deployed EM4100 protocol, facility upgrades or new installations can use existing 125 kHz readers without replacing hardware. For OEM customers and distributors managing multi-site rollouts, this means fewer support calls related to reader mismatch and lower total cost of ownership over the contract period.
Key Features
- 125 kHz Operating Frequency – Industry-standard low frequency for reliable read performance through wallets, card holders, and light obstructions.
- TK4100 Chip (EM4100 / EM4200 Compatible) – Read-only 64-bit memory, factory-programmed with unique identification numbers suitable for large-scale ID assignment.
- ISO Standard Dimensions (85.6 mm x 54 mm) – Fits standard badge holders, card printers, and slot readers without custom sizing.
- 1.8 mm Thick PVC Substrate – Increased rigidity reduces flex damage and extends service life in daily handling environments.
- Waterproof and Durable Construction – Sealed PVC laminate protects the chip and antenna from moisture, dust, and incidental liquid exposure.
- Read-Only Memory After Manufacturing – Factory-locked UID ensures no accidental overwrite and simplifies inventory tracking for bulk orders.
- Blank Surface Ready for Custom Printing – Smooth PVC top layer accepts direct printing, lamination overlays, or adhesive labels for company branding and photo ID integration.
Technical Specifications
| Operating Frequency | 125 kHz |
| Chip Type | TK4100 (Compatible with EM4100 / EM4200) |
| Memory Capacity | 64 bits read-only |
| Dimensions | 85.6 mm x 54 mm (CR80 ISO standard) |
| Thickness | 1.8 mm |
| Material | PVC |
| Protocol | EM4100 compatible |
| Communication Interface | LF RFID (125 kHz) |
| Weight | 0.01 kg per piece |
| Packaging Options | 1 piece, 10 pieces, 200 pieces, 600 pieces, 1,000 pieces |
Industrial Applications
The DO RFID Reader TK4100 blank thick card supports commercial and industrial use cases where reliable identification at scale is required:
- Access Control Systems – Deploy as employee badge credentials for office buildings, warehouses, laboratories, and restricted zones. The 1.8 mm thickness withstands repeated swiping and card reader insertion without cracking.
- Attendance and Time Tracking – Integrate with existing 125 kHz clock-in terminals. The read-only UID eliminates database conflicts caused by duplicate or rewritten cards.
- Asset Tracking and Identification – Affix or insert into asset tags for tool cribs, IT equipment, and inventory bins where a durable, scan-able ID is needed.
- Visitor and Temporary Credentials – Issue bulk-ordered blank cards with printed visitor labels. The low unit cost supports high-volume visitor management without budget strain.
- Membership and Loyalty Cards – Suitable for gyms, parking facilities, and clubs that require a simple, card-based ID that works with existing 125 kHz readers.
- Hotel and Hospitality Key Cards – The thick format provides a more substantial feel for guest key cards while maintaining compatibility with standard magnetic stripe and RFID hybrid readers.
OEM / ODM Manufacturing Support
DO RFID Reader provides comprehensive OEM and ODM services for the TK4100 thick card line. Buyers can specify custom UID ranges for batch consistency across project phases, request pre-printed designs with company logos and branding, and select packaging formats that align with distribution workflows. The factory supports color matching, surface finish variations (glossy, matte, or textured), and integration with printed barcodes or QR codes on the card face. OEM partners receive dedicated production scheduling to ensure that large-scale deployments maintain consistent card appearance and read performance from the first batch to final delivery.
Factory Production Advantages
As a manufacturer with dedicated RFID inlay and card lamination lines, DO RFID Reader controls the entire production chain from chip bonding to final inspection. This vertical integration allows stable output capacity for wholesale orders and recurring supply agreements. Each card undergoes antenna continuity testing and read-range verification before packaging. The factory operates with batch consistency controls that matter to system integrators: same chip batch, same PVC lot, same lamination pressure parameters across order quantities. Export experience with logistics partners ensures that time-sensitive project shipments reach deployment sites on schedule.
Bulk Supply & Project Deployment Support
Project contractors and distributors managing multi-location deployments benefit from tiered pricing that improves unit cost as order volume increases. The 1,000-piece packaging level, for example, supports initial rollout phases, while production capacity allows for rapid replenishment when additional buildings or sites are added mid-contract. DO RFID Reader provides technical support documentation, including recommended reader settings and card handling guidelines, to reduce integration friction. For projects requiring staged delivery, the factory can schedule partial shipments to match site readiness without disrupting production flow.
Frequently Asked Questions
Is this card compatible with existing 125 kHz readers?
Yes. The TK4100 chip is compatible with the EM4100 protocol, which is widely used in 125 kHz access control and identification readers. No protocol conversion or firmware update is needed for standard reader integration.
Can I print on the card surface after purchase?
The blank PVC surface accepts direct printing using compatible card printers, thermal transfer, or adhesive labeling. For high-volume custom printing, DO RFID Reader offers OEM pre-printing services.
What is the minimum order quantity for wholesale pricing?
Wholesale pricing begins at 200 pieces per SKU. Bulk discounts are available at 600 and 1,000 pieces. Contact DO RFID Reader for volume pricing above 1,000 units.
How is the card UID assigned?
The 64-bit read-only ID is factory-programmed during chip manufacturing. Each card carries a unique identifier that cannot be altered after production, ensuring data integrity in access control databases.
Does the 1.8 mm thickness fit standard card printers?
Most commercial card printers with adjustable thickness settings accommodate 1.8 mm media. Verify printer specifications for card thickness tolerance before ordering large quantities.
Can I order a custom UID range for my project?
OEM orders can specify UID blocks for consistent numbering across deployment phases. Contact DO RFID Reader with your project requirements for custom UID allocation support.