{"product_id":"rfid-125khz-card-tag-10-pack","title":"125KHz RFID Card Tag - Pack of 10 (EM4100)","description":"\u003ch1\u003e125KHz RFID Card Tag - Pack of 10 (EM4100)\u003c\/h1\u003e\n\u003cp\u003eA pack of ten 125KHz proximity RFID card tags (EM4100-compatible), each with its own read-only UID. The practical choice for classrooms, labs, and multi-user access or attendance projects where you need a card per person.\u003c\/p\u003e\n\u003ch2\u003eCompatible with\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e125KHz readers such as the JT308, RDM6300 and EM-18\u003c\/li\u003e\n  \u003cli\u003eArduino, ESP32 and Raspberry Pi via a 125KHz reader module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuild it with Compoden's AI\u003c\/h2\u003e\u003cp\u003ePairing a tag with the right reader and code trips up a lot of first builds. Describe your access-control or attendance project to Compoden's AI build assistant. It matches the tag to a compatible reader at the same frequency, checks every part against real stock, and hands you the wiring and the code.\u003c\/p\u003e\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eWe have spent 10 years supplying RFID, electronics, and robotics parts to makers, schools, and access-control projects across India. Every Compoden order includes our AI build companion to help you wire the reader, write the code, and get the tag reading on the first try.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eHow many cards are included?\u003c\/summary\u003e\u003cp\u003eTen 125KHz EM4100 cards, each with a unique read-only UID.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre these the same as the single card tag?\u003c\/summary\u003e\u003cp\u003eYes, the same 125KHz card in a pack of ten for multi-user builds.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo they work with a 13.56MHz reader?\u003c\/summary\u003e\u003cp\u003eNo - these are 125KHz; the MFRC522 and other 13.56MHz readers will not read them.\u003c\/p\u003e\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"125KHz RFID Card Tag - Pack of 10 (EM4100)\", \"brand\": {\"@type\": \"Organization\", \"name\": \"Compoden\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How many cards are included?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Ten 125KHz EM4100 cards, each with a unique read-only UID.\"}}, {\"@type\": \"Question\", \"name\": \"Are these the same as the single card tag?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the same 125KHz card in a pack of ten for multi-user builds.\"}}, {\"@type\": \"Question\", \"name\": \"Do they work with a 13.56MHz reader?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No - these are 125KHz; the MFRC522 and other 13.56MHz readers will not read them.\"}}]}\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53478645039469,"sku":null,"price":114.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/product_658a2741-7c86-4204-9191-6a97a728eb33.webp?v=1782197253","url":"https:\/\/compoden.com\/products\/rfid-125khz-card-tag-10-pack","provider":"Compoden","version":"1.0","type":"link"}