--- product_id: 173274613 title: "Customised Version 1K UID Changeable & T5577 dual Chip IC/ID Key Tag Readable Writable Rewrite for Copy Clone Backup" brand: "xcrfid" price: "£24.00" currency: GBP in_stock: true reviews_count: 9 category: "Xcrfid" url: https://www.desertcart.co.uk/products/173274613-customised-version-1k-uid-changeable-and-t5577-dual-chip-ic store_origin: GB region: United Kingdom --- # Waterproof & dustproof ABS UID changeable 4-byte sector Dual chip T5577 & 1K UID Customised Version 1K UID Changeable & T5577 dual Chip IC/ID Key Tag Readable Writable Rewrite for Copy Clone Backup **Brand:** xcrfid **Price:** £24.00 **Availability:** ✅ In Stock ## Summary > 🔑 Unlock limitless possibilities with the ultimate dual-chip key tag! ## Quick Answers - **What is this?** Customised Version 1K UID Changeable & T5577 dual Chip IC/ID Key Tag Readable Writable Rewrite for Copy Clone Backup by xcrfid - **How much does it cost?** £24.00 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/173274613-customised-version-1k-uid-changeable-and-t5577-dual-chip-ic) ## Best For - xcrfid enthusiasts ## Why This Product - Trusted xcrfid brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure 💧:** Crafted from premium ABS material, this tag is waterproof and dustproof—perfect for any environment. - • **Ultimate Flexibility 🔄:** Change and rewrite the 4-byte UID sector effortlessly for total control over your access keys. - • **Plug & Play Convenience ⚡:** No external power needed—readable and writable on the go with your favorite devices like Flipper Zero. - • **Dual-Frequency Powerhouse 🔑:** Seamlessly clone and backup with both 125 kHz RFID and 13.56 MHz NFC chips in one sleek tag. - • **Versatile Security Solution 🔐:** Ideal for access control, time attendance, ticketing, and cashless payments—secure your world effortlessly. ## Overview The XCRFID Customised Version 1K UID Changeable & T5577 dual chip key tag offers a fully rewritable 4-byte UID sector combined with a T5577 chip, housed in durable waterproof ABS material. Designed for professional-grade access control, cloning, and backup, it supports dual-frequency RFID protocols without requiring external power, making it a versatile and reliable solution for security and identification needs. ## Description Package Include : 10pcs * UID and T5577 Dual chip id tag Pls kindly note : The UID changeable chip is 1k with 4 byte UID.100% brand new and High quality by XCRFID ,Waterproof,dustproof, ABS material, no taste!!. Application Access control, time attendace, ticketing, ePayment and any other application where the integrity and security of the data stored is vital. ID cards and Proximity cards offer a diverse range of functions that are commonly used for such applications as access control, time and attendance, cashless payment, and event management. ID cards are available with ISO card and also as clamshell cards. Review: Excellent value - both chips work fine with Flipper Zero - I needed to duplicate a Schlage 9691T dual chip key fob, and these work perfectly. Following are notes: 1) The NFC chip does read as a Gen 1a "Magic tag" with the Flipper Zero 2) The Flipper Zero had no trouble successfully writing (duplicating) to the 13.6 MHz NFC chip 3) The Flipper Zero had no trouble successfully writing (duplicating) to the 125 kHz RFID chip I am very happy with these. I don't understand the number of bad reviews, and assume that most of the bad reviews are due to user error or user misunderstanding of how these protocols work. Review: Very good item - Very good it work good ## Features - XCRFID tag made by UID changeable zero sector writable（4byte UID） with T5577 rewritable chip . - 100% brand new and High quality by XCRFID ,Waterproof,dustproof, ABS material, no taste! - XCRFID UID cards Sector block 0 which can be changed and ID keyfobs could be copied arbitrarily - Dual frequency,dual chip, access control system - Readable and rewritable,No external power require ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0828JNQ62 | | Best Sellers Rank | #111,930 in Office Products ( See Top 100 in Office Products ) #202 in Identification Badges | | Brand | XCRFID | | Color | Multicolor | | Customer Reviews | 4.2 4.2 out of 5 stars (65) | | Date First Available | December 3, 2019 | | Item Weight | 1.94 ounces | | Item model number | XC393 | | Manufacturer | XCRFID | | Manufacturer Part Number | XC393 | | Material Type | Acrylonitrile Butadiene Styrene | | Number of Items | 1 | | Product Dimensions | 1.9 x 0.6 x 0.3 inches | | Shape | Rectangular | | Size | 1 Count (Pack of 1) | ## Product Details - **Brand:** XCRFID - **Color:** Multicolor - **Finish Type:** Uncoated - **Material:** Acrylonitrile Butadiene Styrene - **Size:** 1 Count (Pack of 1) ## Images ![Customised Version 1K UID Changeable & T5577 dual Chip IC/ID Key Tag Readable Writable Rewrite for Copy Clone Backup - Image 1](https://m.media-amazon.com/images/I/51s9jPqq8jL.jpg) ## Questions & Answers **Q: Is the chip only 1-time UID writable?** A: No. These are rewritable. **Q: Do these use c-rfm? C or f, are in printers. And in wood. And in oxygen.** A: Those keys are dual chip which are UID changeable with 4 byte UID and T5577 rewritable . **Q: can i clone a mifare 1k card to it using a flipper zero??** A: On my fz it shows Mifare Classic 1K if I use Extra Action > Read Specific Card Type > Read Mifare Classic. Under Applications > Tools > NFC Magic > Check Magic Tag I get Classic Gen1A/B. There is then the option to wipe or write. I was able to successfully write the tag. **Q: What color are these?** A: The ones I received are red, blue and yellow. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent value - both chips work fine with Flipper Zero *by T***O on February 16, 2024* I needed to duplicate a Schlage 9691T dual chip key fob, and these work perfectly. Following are notes: 1) The NFC chip does read as a Gen 1a "Magic tag" with the Flipper Zero 2) The Flipper Zero had no trouble successfully writing (duplicating) to the 13.6 MHz NFC chip 3) The Flipper Zero had no trouble successfully writing (duplicating) to the 125 kHz RFID chip I am very happy with these. I don't understand the number of bad reviews, and assume that most of the bad reviews are due to user error or user misunderstanding of how these protocols work. ### ⭐⭐⭐⭐⭐ Very good item *by A***I on January 19, 2026* Very good it work good ### ⭐⭐⭐ Does NOT work as HID Prox *by O***Z on March 31, 2023* It comes and works as EM410x, but any attempt to program it as HID Prox does not work for some reason. Reading it with my Proxmark, it does seem to have a T55xx chip, but I could not get it to work as HID Prox. The High Frequency/Mifare half does read however I never tried reprogramming that side. So overall, works great as HF and EM410x and likely works as other LF formats, but not as HID Prox. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/173274613-customised-version-1k-uid-changeable-and-t5577-dual-chip-ic](https://www.desertcart.co.uk/products/173274613-customised-version-1k-uid-changeable-and-t5577-dual-chip-ic) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*