--- product_id: 57504333 title: "20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card" brand: "fongwah" price: "NZ$1" currency: NZD in_stock: false reviews_count: 2 url: https://www.desertcart.nz/products/57504333-20pcs-rfid-classic-s70-chip-with-4k-smart-card-ic store_origin: NZ region: New Zealand --- # 13.56MHz frequency Secure 4K storage 32 sectors, 4 blocks 20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card **Brand:** fongwah **Price:** NZ$1 **Availability:** ❌ Out of Stock ## Summary > 🔑 Unlock the Future of Access Control! ## Quick Answers - **What is this?** 20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card by fongwah - **How much does it cost?** NZ$1 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/57504333-20pcs-rfid-classic-s70-chip-with-4k-smart-card-ic) ## Best For - fongwah enthusiasts ## Why This Product - Trusted fongwah brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Design:** Durable and reliable for everyday use in various environments. - • **Unmatched Security:** Experience top-tier access control with advanced RFID technology. - • **Efficient Management:** Streamline access management with 32 sectors for organized data storage. - • **Seamless Compatibility:** Fully compatible with NXP Mifare Classic 4K for effortless integration. - • **Versatile Applications:** Perfect for public transport, employee cards, and loyalty programs. ## Overview The 20pcs RFID Classic S70 Chip offers a robust 4K smart card solution operating at 13.56MHz, designed for diverse applications such as public transportation, access management, and employee identification. With its secure and organized data structure, this card is a reliable choice for modern access solutions. ## Description Features: - User definable access conditions for each memory block -Each card has a unique serial number -Each sector has a separate set of passwords and access control -Each card has a unique serial number: 32 bit -With the anti-collision mechanism, support multi card operation -No power supply, with antenna, including encryption control logic and communication logic circuit -Working temperature: -20℃～50℃ - Operating distance up to 100 mm depending on antenna geometry and reader configuration - Contactless transmission of data and supply energy -Data integrity of 16-bit CRC, parity, bit coding, bit counting -Typical ticketing transaction time of <100 ms (including backup management) Applications: Public transportation Access management Electronic toll collection Car parkingHotel access card ## Features - mifare S70 4k RFID card frequency: 13.56Mhz - mifare S70 card organized in 32 sectors of 4 blocks and 8 sectors of 16 blocks (one block consists of 16 bytes) - mifare S70 fully compatiable with NXP Mifare Classic 4K - mifare S70 card application:Public transportation,Electronic toll collection,School and campus cards,Internet cafes,Access management,Car parking,Employee cards,Loyalty ## Images ![20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card - Image 1](https://m.media-amazon.com/images/I/51JbBrVk1xL.jpg) ![20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card - Image 2](https://m.media-amazon.com/images/I/513Ar2ArZ8L.jpg) ![20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card - Image 3](https://m.media-amazon.com/images/I/41GiKsdx9GL.jpg) ![20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card - Image 4](https://m.media-amazon.com/images/I/51DVcGAjYpL.jpg) ![20pcs RFID Classic S70 Chip with 4K Smart Card IC Card with Block 0 Non-Writable 13.56Mhz Works on UID Series Entry Access Proximity Card - Image 5](https://m.media-amazon.com/images/I/41wRnj80gcL.jpg) ## Customer Reviews ### ⭐ Doesn't work as stated *by A***N on Reviewed in Germany on 29 May 2020* The cards get corrupted if you try to write to sector 0. Useless. ### ⭐⭐⭐ Grundsätzlich gut - Sektor null leider nicht beschreibbar 🙈🙈🙈 *by ♎***️ on Reviewed in Germany on 14 February 2022* Als Vine-Club-Tester bewerte ich die Produkte, die ich testen darf, nach bestem Wissen und Gewissen ✅Ich vergebe 1-5 Sterne und begründe auch warum 🙂 Ich bin vollkommen frei in meiner Bewertung und versuche mit meinen Bewertungen anderen Käufern zu helfen ☺️➕ Das Positive:- Die Karten kommen gut und sicher verpackt an. Somit von guter Qualität und alle Karten sind nutzbar.- Die sind auch beschreibbar. Allerdings nicht auf allen Blöcken.➖ Das Negative:- Der Block null ist nicht bescheibbar. Somit sind die Karten nur eingeschränkt nutzbar. Dafür finde ich den Preis zu hoch.FAZIT:An sich gute Karten. Als reine Zugangskarten oder Ähnliches wunderbar zu verwenden. Für Karten, bei denen der Block null nicht beschreibbar ist, finde ich sie zu teuer.Ich hoffe, dass ich euch bei eurer Kaufentscheidung helfen konnte 😊 --- ## 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.nz/products/57504333-20pcs-rfid-classic-s70-chip-with-4k-smart-card-ic](https://www.desertcart.nz/products/57504333-20pcs-rfid-classic-s70-chip-with-4k-smart-card-ic) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-04-28*