

The 125KHz Contactless Smart Card is a battery-free data storage medium based on low-frequency radio frequency identification (RFID) technology. Embedded with a micro coil and chip, it harvests energy from and transmits its unique ID or pre-stored data to a reader via electromagnetic induction when brought within proximity. Constructed from durable PVC material, it is waterproof, dustproof, and bend-resistant with a lifespan exceeding 10 years. Ideal for access control, attendance tracking, membership identification, and asset management, its read-only feature ensures data integrity while encrypted UID serial numbers deliver reliable security. Contactless operation significantly enhances efficiency and user experience.

Product Description
Material | High Quality PVC/ PET/ABS/PETG |
Size | 85.5x54mm or customized |
Thickness | 0.76mm or customized |
Frequency | 125KHz |
Weight | 5.8 ± 0.5g |
Protocol | ISO/IEC 7815 |
Temperature | -10°C to +50°C |
Operating Range | 1-5 cm |
Surface | Matte, Glossy, Frosted, Lenticular |
Write Endurance | More than 100,000 times |
Data Retention | 10 years |
Thickness | 0.76mm |
Printing | CMYK ( Off-Set ) Printing, Silk-screen Printing |
| 1).gold/silver plated |
2).Hot Stamping: hot gold/silver/laser foil | |
3).Code: thermal code (white/black); spot jet code /inkjet printing code(black );UV code; convex code(large/small; gold/silver); laser engrave code (golden). sequential number/series number; personalized number. | |
4).Magnetic Stripe: Hi-co 2750oe; Lo-co 300oe. width:12.7 mm or 8.4mm | |
5).Signature Panel: white, brown, gray, etc | |
6).Punching Hole: round hole punching, flat hole punching ,ID hole, etc | |
7).Barcode: 39 barcode,13 barcode, 128 barcode; QR code | |
8).Protecting Film Security Hologram: laser film/hologram overlay, protective film | |
9).Others: carving, protrait, anti-fack logo, UV logo, laser logo, labeling, watermark, etc | |
Certificate | ISO 9001-2008, SGS, RoHs, CE |
✅ Contactless Operation: 1-10cm reading range, fast response, zero wear
✅ Extended Lifespan: Passive design, shock-resistant, suitable for harsh environments
✅ Data Security: Anti-copy read-only UID, supports custom encryption formats
✅ High Compatibility: Works with EM4100/TK4100 and mainstream 125KHz readers
✅ Cost-Effective: Low per-card cost, minimal system upgrade investment
We offer full customization:
Chip Parameters: UID serial format, data storage (read-only/writable)
Card Design: Size (CR80 standard or custom shapes), logo/text printing, colors, surface finish (matte/glossy)
Materials: PVC/ABS/eco-friendly PETG, anti-metal/high-temp variants
Data Pre-encoding: Batch writing of specified IDs/data
Packaging: Plain/laminated cards, hole-punched, keychain attachments
🏢 Access Control & Attendance
Replaces physical keys. Staff gain entry in 0.3 seconds with automated attendance logging and multi-zone permissions.
🛍️ Membership Identification
Retail/gym membership cards enable rapid tier recognition and integrated payment/loyalty programs.

📦 Asset & Equipment Tracking
Tags fixed assets for inventory checks via handheld readers, minimizing manual errors.
🎓 Campus All-in-One Cards
Combines student ID, cafeteria payment, and library access in one durable, waterproof card.

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