{"product_id":"125khz-t5577-writable-rfid-coin-card-keyfob-5pack","title":"125KHz T5577 Writable Rewritable RFID Coin Card \u0026 Keyfob 5pk","description":"\n\u003ch2\u003e125KHz T5577 Writable \u0026amp; Rewritable RFID Coin Cards \u0026amp; Keyfobs – 5-Pack\u003c\/h2\u003e\n\u003cp\u003eUpgrade your access control setup with this versatile 5-pack of \u003cstrong\u003e125KHz T5577 Writable RFID Coin Cards and Keyfobs\u003c\/strong\u003e. Compatible with most 125KHz RFID readers and card writers, the T5577 chip allows you to \u003cstrong\u003eread, write, and rewrite\u003c\/strong\u003e credentials multiple times — making these tags ideal for door entry systems, time-attendance terminals, gym lockers, parking systems, and custom DIY security projects.\u003c\/p\u003e\n\n\u003cp\u003eBuilt with a \u003cstrong\u003ecopper coil antenna\u003c\/strong\u003e embedded in a durable \u003cstrong\u003ePVC housing\u003c\/strong\u003e, each card and keyfob is compact, lightweight, and easy to carry on a keyring or wallet. The coin-card form factor slips effortlessly into any standard card slot, while the keyfob attaches to any keychain for on-the-go convenience.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip:\u003c\/strong\u003e T5577 — fully writable and rewritable 125KHz RFID chip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 125KHz (compatible with EM4100, HID, and other common 125KHz formats after writing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAntenna:\u003c\/strong\u003e High-quality copper coil for reliable read range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Durable PVC construction — slim, lightweight, and splash-resistant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e Coin card + keyfob — two convenient carry options included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack Size:\u003c\/strong\u003e 5 pieces (mix of coin cards and keyfobs)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUse Cases:\u003c\/strong\u003e Door access control, time-attendance systems, locker management, parking systems, RFID duplication \u0026amp; testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose T5577 RFID Tags?\u003c\/h3\u003e\n\u003cp\u003eThe T5577 chip is one of the most flexible 125KHz RFID chips available. Unlike read-only EM4100 tags, T5577 cards can be programmed and reprogrammed to emulate a wide range of 125KHz credentials. This makes them a favourite among system integrators, IT professionals, hobbyists, and anyone who needs flexible, reusable RFID credentials.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e5 × 125KHz T5577 RFID Tags (coin cards and\/or keyfobs)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on RFID technology and access control standards, visit the \u003ca href=\"https:\/\/www.nist.gov\/publications\/guidelines-securing-radio-frequency-identification-rfid-systems\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNIST Guidelines for Securing RFID Systems\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What devices are compatible with 125KHz T5577 RFID coin cards and keyfobs?\u003c\/h4\u003e\n\u003cp\u003eA: T5577 RFID tags are compatible with most standard 125KHz RFID readers, door access control panels, time-attendance terminals, and RFID card writers\/duplicators that support the 125KHz frequency. Once written, they can emulate popular formats such as EM4100 and HID.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I rewrite the T5577 RFID card multiple times?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — the T5577 chip is fully rewritable, meaning you can overwrite the stored credential data multiple times using a compatible 125KHz RFID writer or duplicator. This makes it an excellent choice for testing, development, and flexible access control deployments.\u003c\/p\u003e\n\u003ch4\u003eQ: Are these RFID tags waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: The PVC housing and embedded copper coil antenna provide solid splash and moisture resistance for everyday use — including outdoor keyfob applications. They are not designed for full submersion.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between the coin card and keyfob included in this pack?\u003c\/h4\u003e\n\u003cp\u003eA: Both contain the same T5577 125KHz RFID chip. The coin card is credit-card sized and slim enough to fit in a wallet or card holder, while the keyfob features a ring attachment for carrying on a keychain — giving you two convenient form factors in one pack.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What devices are compatible with 125KHz T5577 RFID coin cards and keyfobs?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"T5577 RFID tags are compatible with most standard 125KHz RFID readers, door access control panels, time-attendance terminals, and RFID card writers\/duplicators that support the 125KHz frequency. 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The coin card is credit-card sized and slim enough to fit in a wallet or card holder, while the keyfob features a ring attachment for carrying on a keychain — giving you two convenient form factors in one pack.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Tech, Tools \u0026 Auto\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/collections\/tech-tools-auto\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"125KHz T5577 Writable Rewritable RFID Coin Card \u0026 Keyfob 5pk\", \"item\": \"https:\/\/vpggdm-rp.myshopify.com\/products\/125khz-t5577-writable-rfid-coin-card-keyfob-5pack\"}]}\u003c\/script\u003e","brand":"Qme","offers":[{"title":"One Size","offer_id":49758679892182,"sku":"14:1052#One Size","price":18.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/5243\/8486\/files\/Sda5a947f39774d8597ad2dc961cc434bC.webp?v=1785326130","url":"https:\/\/qmeboost.com\/products\/125khz-t5577-writable-rfid-coin-card-keyfob-5pack","provider":"Qme","version":"1.0","type":"link"}