{"product_id":"rfid-125khz-coin-tag","title":"125KHz RFID Coin Tag (ABS, with Hole)","description":"\u003ch1\u003e125KHz RFID Coin Tag (ABS, with Hole)\u003c\/h1\u003e\n\u003cp\u003eA 125KHz proximity RFID tag in a rugged ABS coin form factor with a mounting hole, so you can thread it onto a keyring or fix it to an asset. Read-only UID, for access control and identification with any 125KHz reader.\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\u003eWhat frequency is this?\u003c\/summary\u003e\u003cp\u003e125KHz, read-only UID - use it with a 125KHz reader.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it work with the MFRC522?\u003c\/summary\u003e\u003cp\u003eNo, the MFRC522 is 13.56MHz; this coin is 125KHz.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the hole for?\u003c\/summary\u003e\u003cp\u003eTo thread it onto a keyring or fasten it to an asset you want to identify.\u003c\/p\u003e\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"125KHz RFID Coin Tag (ABS, with Hole)\", \"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\": \"What frequency is this?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"125KHz, read-only UID - use it with a 125KHz reader.\"}}, {\"@type\": \"Question\", \"name\": \"Does it work with the MFRC522?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, the MFRC522 is 13.56MHz; this coin is 125KHz.\"}}, {\"@type\": \"Question\", \"name\": \"What is the hole for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"To thread it onto a keyring or fasten it to an asset you want to identify.\"}}]}\u003c\/script\u003e","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53478645137773,"sku":null,"price":58.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/product_0d3a4a6d-3ade-45a1-854a-0421daadc5d1.png?v=1782197270","url":"https:\/\/compoden.com\/products\/rfid-125khz-coin-tag","provider":"Compoden","version":"1.0","type":"link"}