--- product_id: 344468667 title: "CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector" brand: "cify" price: "€ 28.25" currency: EUR in_stock: true category: "Cify" url: https://www.desertcart.be/products/344468667-cify-20pcs-changeable-uid-smart-card-rewritable-13-56mhz-rfid store_origin: BE region: Belgium --- # 13.56MHz frequency 100,000+ rewrites Unique changeable encrypted UID CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector **Brand:** cify **Price:** € 28.25 **Availability:** ✅ In Stock ## Summary > 🔑 Unlock the future of smart access with endless possibilities! ## Quick Answers - **What is this?** CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector by cify - **How much does it cost?** € 28.25 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/344468667-cify-20pcs-changeable-uid-smart-card-rewritable-13-56mhz-rfid) ## Best For - cify enthusiasts ## Why This Product - Trusted cify brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Customizable Security:** Each card features a unique, encrypted UID that you can change to stay ahead of threats. - • **Seamless Compatibility:** Works flawlessly with all 13.56MHz door access control systems for effortless integration. - • **Optimal Proximity Range:** Designed for 0-10cm reading distance, ensuring quick, contactless entry every time. - • **Durable & Weather-Resistant:** Built to withstand temperatures from -40°C to 65°C, perfect for any environment. - • **Endless Rewrites, Limitless Access:** Over 100,000 reliable read/write cycles keep your security fresh and flexible. ## Overview The CIFY 20pcs Changeable UID Smart Cards are rewritable RFID cards operating at 13.56MHz, compatible with all major door access systems. Each card supports over 100,000 read/write cycles and features a unique, changeable encrypted UID for enhanced security. With a reading range of up to 10cm and durable construction suitable for extreme temperatures, these cards offer flexible, reliable, and secure access control solutions for offices, apartments, and more. ## Description Product Feature Chip: UID Material: PVC Frequency: 13.56MHz Material: High quality ABS Operation frequency: 13.56MHz Read and rewrite key tags Compatible with all Door Entry system Reading distance: 0-10cm (Depending on the reader's design,environment and application) Working temperature: -40 °C~ 65 °C Store temperature: -25 °C ~50 °C Read/write Times: 100000 times Product Description 1. High quality RFID cards proximity door control access. 2. Each card without a unique ID number 3. Suitable for 13.56MHz card reader and reading distance is 0-10cm. 4. Widely used at apartment, office, park and other places. 5. 100% brand new and high quality. 6. Read, Writable and Rewrite. Waterproof 7. Can copy write mi-fare 1k key card ## Features - ★Support read, write and copy, over 100, 000 rewrite times. - ★Working frequency is 13.56MHz. Compatible with all kinds of door access control system. - ★Each card with a unique encrypted ID number, can be changed. - ★Suitable for 13.56MHz card reader and reading distance is 0-10cm (0-4inch). - ★Fully compatible to MI-FARE Classic 1K,4-byte UID, 1K Byte memory, organized in 16 sectors of 4 blocks, compliant to ISO/IEC 14443A protocal. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B097BNYRP4 | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 48,909 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 101 in Medical RFID Supplies | | Colour | White | | Customer Reviews | 3.5 3.5 out of 5 stars (25) | | Date First Available | 30 April 2021 | | Guaranteed software updates until | unknown | | Item Package Quantity | 1 | | Item Weight | 130 g | | Manufacturer | CIFY | | Manufacturer reference | CIFY-20 UID | | Part Number | CIFY-20 UID | | Product Dimensions | 8.5 x 5.4 x 0.1 cm; 130 g | ## Images ![CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector - Image 1](https://m.media-amazon.com/images/I/51xXeN0EWKL.jpg) ![CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector - Image 2](https://m.media-amazon.com/images/I/212hQMxHXlL.jpg) ![CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector - Image 3](https://m.media-amazon.com/images/I/51ADB6BIZeL.jpg) ![CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector - Image 4](https://m.media-amazon.com/images/I/31ddYVA1f1L.jpg) ![CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector - Image 5](https://m.media-amazon.com/images/I/31a9Yup7M0L.jpg) ## Questions & Answers **Q: Would these cards work with Net2?** A: This card is writable 13.56MHz UID cards, used to copy 13.56MHz Mi-fare IC card. **Q: Are these cards 1st or 2nd gen tags?** A: This is 13.56MHz writable UID cards, can copy mi-fare 1k card. ## Frequently Bought Together - CIFY 20pcs Changeable UID Smart Card, Rewritable 13.56MHz RFID IC Blank Card for 1K S50 MF1 Mi-fare Door Access Control Block 0 Sector - Jadeshay RFID Reader,NFC Reader/Writer ACR122U ISO 14443A/B RFID Card Reader + Free Software in White,Contactless Smart Card Reader Writer with USB Cable --- ## 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.be/products/344468667-cify-20pcs-changeable-uid-smart-card-rewritable-13-56mhz-rfid](https://www.desertcart.be/products/344468667-cify-20pcs-changeable-uid-smart-card-rewritable-13-56mhz-rfid) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-08-19*