--- product_id: 39603375 title: "YARONGTECH 4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10)" brand: "yarongtech" price: "R444" currency: ZAR in_stock: true reviews_count: 10 category: "Yarongtech" url: https://www.desertcart.co.za/products/39603375-yarongtech-4k-rfid-s70-smart-card-chip-13-56mhz-ic store_origin: ZA region: South Africa --- # Unique, factory-set 4 Byte UID 4K (1K bytes) read/write memory 13.56MHz wireless frequency YARONGTECH 4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10) **Brand:** yarongtech **Price:** R444 **Availability:** ✅ In Stock ## Summary > 🔐 Unlock the future of smart access with style and security! ## Quick Answers - **What is this?** YARONGTECH 4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10) by yarongtech - **How much does it cost?** R444 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/39603375-yarongtech-4k-rfid-s70-smart-card-chip-13-56mhz-ic) ## Best For - yarongtech enthusiasts ## Why This Product - Trusted yarongtech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unique Security ID:** Each card features a factory-programmed, unchangeable 4 Byte UID for secure identification. - • **Bulk Pack Convenience:** Set of 10 individually packed cards, ideal for hotels, offices, or exclusive membership programs. - • **Seamless Access Control:** Industry-standard 13.56MHz RFID tech ensures fast, reliable wireless communication. - • **Generous Memory Capacity:** 4K chip with 1K bytes read/write memory for versatile data storage and customization. - • **Sleek, Professional Design:** Credit card-sized, blank white PVC cards ready for sublimation printing—perfect for custom branding. ## Overview This pack of 10 YARONGTECH 4K RFID S70 Smart Cards operates at 13.56MHz using the ISO14443A standard, featuring 1K bytes of rewritable memory and a unique, factory-set 4 Byte UID for secure identification. Sized like a credit card and made from durable PVC, these blank white cards are sublimation-print compatible, making them perfect for professional access control systems in hotels and offices. ## Description 1.MIFARE Classic 4K chip 2.13.56MHZ. 3.Credit card size. 4.PVC material. 5.Blank white card,printable by sublimation printer,but can't support inkjet printer. MIFARE and MIFARE Classic are trademarks of NXP B.V. Review: Good value. - I bought the wrong ones by mistake. I meant to buy the ones tk make amiibos. Still, they're well made and I'm planning to find a new use for them. Great value! Review: Works as advertised - Works great Well packaged and shipped fast. Definitely would recommend ## Features - RFID 4K Card operates at 13.56MHz wireless frequency,according to the ISO14443A standard,and contains 1K bytes of read/write memory,but UID can’t change,uid is not rewritable - All cards are pre-programmed with a unique ID(4 Byte UID). The UID is NOT changeable, factory default key: FF FF FF FF FF FF - They are credit card size,each card individually OPP bag packed. Blank white both sides(no printed numbers, no magnetic strips and no slots or holes) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01LYBKM0U | | Best Sellers Rank | #167,713 in Office Products ( See Top 100 in Office Products ) #388 in Identification Badges #900 in Home Security Systems | | Brand | YARONGTECH | | Built-In Media | Bag | | Cellular Technology | GSM | | Customer Reviews | 3.9 out of 5 stars 50 Reviews | | Global Trade Identification Number | 00725350790301 | | Item Dimensions L x W | 3.37"L x 2.13"W | | Manufacturer | YARONG | | Mfr Part Number | MIFARE Classic® 4K wristbands | | Model Number | MIFARE Classic® 4K wristbands | | Number of Items | 10 | | Product Dimensions | 3.37"L x 2.13"W | | Service Provider | KABA, SAFLOK, MIWA, ONITY | | Smart Home Compatibility | Not Smart Home Compatible | | UPC | 725350790301 725350789701 | | Unit Count | 10.0 Count | ## Product Details - **Brand:** YARONGTECH - **Cellular Technology:** GSM - **Product Dimensions:** 3.37"L x 2.13"W - **Service Provider:** KABA, SAFLOK, MIWA, ONITY - **UPC:** 725350790301 725350789701 ## Images ![YARONGTECH 4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10) - Image 1](https://m.media-amazon.com/images/I/31Eic4vmt2L.jpg) ![YARONGTECH 4K RFID S70 Smart Card Chip 13.56MHZ IC Hotel Key Card (Pack of 10) - Image 2](https://m.media-amazon.com/images/I/81VM4IdHHoL.jpg) ## Questions & Answers **Q: What’s difference between mi fare 1k and 4K ? Can i use it to read & write as 1k card ?** A: the difference is memory. if you use mifare 1k cards,you can buy our MIFARE 1K Cards,it's cheaper. but please note the UID can't change. **Q: are these suitable as ving-compatible master cards?** A: No it’s not **Q: Can these be written to as nfc cards?** A: sorry,no. if you want to compatible with all nfc phone,please choose our ntag215 cards: https://www.amazon.com/dp/B07LFDQBFC **Q: can it be read by NFC smartphone?** A: can read by some phone.but can't support all phone. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value. *by S***R on July 25, 2020* I bought the wrong ones by mistake. I meant to buy the ones tk make amiibos. Still, they're well made and I'm planning to find a new use for them. Great value! ### ⭐⭐⭐⭐⭐ Works as advertised *by A***R on March 18, 2022* Works great Well packaged and shipped fast. Definitely would recommend ### ⭐ Waste of money *by R***. on April 8, 2022* All 10 of the cards are not writeable. The magic byte is completely inaccessible and a few of the cards are unreadable, even with a high-powered antenna. ## Frequently Bought Together - YARONGTECH MIFARE Classic® 4K RFID Smart Card NFC Chip 13.56MHZ IC Hotel Key Card (Pack of 10) - YARONGTECH MIFARE Classic 1K RFID Smart Cards 13.56MHz ISO 14443A White Door Entry Hotel Key Cards Zebra Printable (White 10 Pack) --- ## 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.za/products/39603375-yarongtech-4k-rfid-s70-smart-card-chip-13-56mhz-ic](https://www.desertcart.co.za/products/39603375-yarongtech-4k-rfid-s70-smart-card-chip-13-56mhz-ic) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-06-23*