{"product_id":"10-pack-125khz-tk4100-rfid-access-control-id-cards","title":"10-Pack 125KHz TK4100 RFID Cards – Access Control ID Cards","description":"\n\u003ch2\u003e10-Pack 125KHz RFID Access Control ID Cards (TK4100\/EM4100)\u003c\/h2\u003e\n\u003cp\u003eKeep your access control, time attendance, or smart entry systems running smoothly with this set of \u003cstrong\u003e10 slim RFID ID cards\u003c\/strong\u003e. Featuring the reliable \u003cstrong\u003eTK4100 \/ EM4100 chip\u003c\/strong\u003e and operating at \u003cstrong\u003e125KHz\u003c\/strong\u003e, these white PVC cards are a drop-in solution for schools, offices, residential buildings, and IoT projects that rely on proximity card readers.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip:\u003c\/strong\u003e TK4100 \/ EM4100 — industry-standard 125KHz read-only chip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 125KHz — compatible with the majority of standard RFID readers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCard Thickness:\u003c\/strong\u003e 1.8mm ± 0.02mm — slim yet durable profile\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRead Range:\u003c\/strong\u003e 3–8 cm for reliable, contactless scanning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-quality PVC encapsulation for everyday durability\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Clean white — easy to label or badge-print\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 10 cards per pack — great value for system setup or replacements\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDoor access control systems for offices, schools, and residential complexes\u003c\/li\u003e\n  \u003cli\u003eEmployee or student time \u0026amp; attendance tracking\u003c\/li\u003e\n  \u003cli\u003eEnterprise one-card systems\u003c\/li\u003e\n  \u003cli\u003eIoT smart-home and building automation projects\u003c\/li\u003e\n  \u003cli\u003eParking and gate management\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications at a Glance\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLK18\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTK4100 \/ EM4100\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8mm ± 0.02mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRead Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEncapsulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePVC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePack Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 cards\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Choose These RFID Cards?\u003c\/h3\u003e\n\u003cp\u003eThe TK4100 chip is one of the most widely supported 125KHz formats globally, ensuring broad compatibility with access readers, attendance terminals, and smart-lock systems. The sturdy 1.8mm PVC construction resists everyday wear, while the smooth white surface can be printed on or slotted into standard ID card holders. Whether you are setting up a new system or stocking up on replacements, this 10-pack delivers consistent, dependable performance.\u003c\/p\u003e\n\n\u003cp\u003eFor general guidance on electronic access control and physical security standards, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Are these 125KHz RFID cards compatible with standard access control readers?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. These TK4100\/EM4100 cards operate at 125KHz, the most common frequency used by access control readers, door entry systems, and attendance terminals worldwide. Always confirm your reader accepts the EM4100\/TK4100 protocol before purchasing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I write or reprogram the data on these RFID cards?\u003c\/h4\u003e\n\u003cp\u003eA: No. The TK4100\/EM4100 chip is a read-only chip. Each card ships with a factory-programmed, unique ID number that cannot be overwritten. If you need writable\/rewritable cards, you would require a different chip format such as T5577.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the read range of these cards?\u003c\/h4\u003e\n\u003cp\u003eA: Under typical conditions the cards are detected at a distance of 3–8 cm from a compatible 125KHz reader. Actual range may vary slightly depending on your specific reader's antenna strength.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many cards come in the pack?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes \u003cstrong\u003e10 white RFID ID cards\u003c\/strong\u003e, making it ideal for initial system setup, batch enrollment, or keeping spares on hand for replacements.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are these 125KHz RFID cards compatible with standard access control readers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. These TK4100\/EM4100 cards operate at 125KHz, the most common frequency used by access control readers, door entry systems, and attendance terminals worldwide. 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