---
product_id: 618575696
title: "LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector"
brand: "lexi"
price: "$U4290"
currency: UYU
in_stock: false
reviews_count: 5
category: "Lexi"
url: https://www.desertcart.uy/products/618575696-lexi-20pcs-rewritable-uid-smart-card-13-56mhz-changeable-rfid
store_origin: UY
region: Uruguay
---

# 13.56MHz frequency 100,000+ rewrites Unique encrypted UID LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector

**Brand:** lexi
**Price:** $U4290
**Availability:** ❌ Out of Stock

## Summary

> 🔑 Unlock smarter access with LEXI’s endlessly rewritable smart cards!

## Quick Answers

- **What is this?** LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector by lexi
- **How much does it cost?** $U4290 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/618575696-lexi-20pcs-rewritable-uid-smart-card-13-56mhz-changeable-rfid)

## Best For

- lexi enthusiasts

## Why This Product

- Trusted lexi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Encrypted Security:** Each card features a unique, reprogrammable encrypted ID for top-tier access control.
- • **Optimal Read Range:** Reliable 0-10cm reading distance ensures quick, hassle-free entry every time.
- • **Endless Reusability:** Over 100,000 rewrite cycles keep your security fresh and flexible without waste.
- • **Durable & Waterproof:** Premium PVC build withstands daily wear and environmental challenges with ease.
- • **Seamless Compatibility:** Works flawlessly with all 13.56MHz door access systems for instant integration.

## Overview

The LEXI 20pcs Rewritable UID Smart Cards operate at 13.56MHz frequency, compatible with all MI-Fare Classic 1K door access systems. Each card supports over 100,000 rewrites and features a unique encrypted UID, ensuring secure, flexible, and durable access control solutions ideal for offices, apartments, and parks.

## 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

Review: Block 0 can not be written. Misleading product name
Review: Worked great!

## Features

- 1. Working frequency is 13.56MHz. Compatible with all kinds of door access control system.
- 2. Support read, write and copy, over 100, 000 rewrite times.
- 3. Each card with a unique encrypted ID number, can be reprogrammed.
- 4. Suitable for 13.56MHz card reader and reading distance is 0-10cm (0-4inch).
- 5. 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 | B0894KMDMG |
| Alert Type | Motion Only |
| Antenna Location | Home Security |
| Best Sellers Rank | #278,969 in Home Improvement ( See Top 100 in Home Improvement ) #941 in Home Security Alarms |
| Brand | Lexi |
| Built-In Media | 20pcs Rewritable UID Smart Card |
| Colour | White |
| Compatible Devices | Smartphone |
| Connectivity Technology | Wireless |
| Control Method | App |
| Country of Origin | USA |
| Customer Reviews | 4.0 out of 5 stars 46 Reviews |
| Installation Method | Self-Adhesive |
| Item Dimensions | 8.4 x 5.5 x 0.1 Centimeters |
| Item Height | 0.05 Inches |
| Item Weight | 0.26 Pounds |
| Item dimensions L x W x H | 8.4 x 5.5 x 0.1 Centimeters |
| Manufacturer | LEXI |
| Model Number | UID-20 |
| Network Connectivity Technology | Wireless |
| Power Source | Battery Powered |
| Sensor Technology | RFID |
| UPC | 191171075802 |
| Unit Count | 20.0 Count |
| Voltage | 24 Volts |

## Product Details

- **Brand:** Lexi
- **Colour:** White
- **Power Source:** Battery Powered
- **Compatible Devices:** Smartphone
- **Item dimensions L x W x H:** 8.4 x 5.5 x 0.1 Centimeters

## Images

![LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector - Image 1](https://m.media-amazon.com/images/I/31a9Yup7M0L.jpg)
![LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector - Image 2](https://m.media-amazon.com/images/I/41B+Yb9l6SL.jpg)
![LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC 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)
![LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector - Image 4](https://m.media-amazon.com/images/I/51dKfW6e7dL.jpg)
![LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector - Image 5](https://m.media-amazon.com/images/I/51xXeN0EWKL.jpg)

## Questions & Answers

**Q: Can these cards be hole punched?  Is the antenna depth from the edges consistent for each card?  I need a depth greater than 9mm.**
A: Yes, you can punch hole on its non-wire area, this won't influence the card functions.

**Q: Can these be hole punched?  NOT**
A: yes, if not tough the inside wires.

**Q: Are these Magic Gen1a, 1b, or 2?**
A: This cards are 13.56MHz UID cards, they are writable and changeable, use to copy the 13.56MHz RFID cards.

**Q: For hole punch, how far, in mm, from the edge is the antenna on the top edge (narrow side of card)?**
A: You can illuminate the inside of the card with a strong light in a dark environment to see where its cables are located.

## Customer Reviews

### ⭐ Block 0 can not be written. Misleading product name
*by T***I on 27 December 2023*



### ⭐⭐⭐⭐⭐ Worked great!
*by C***E on 29 March 2025*



### ⭐⭐⭐⭐⭐ Make sure you get the right one!
*by R***. on 24 August 2024*



## Frequently Bought Together

- LEXI 20pcs Rewritable UID Smart Card, 13.56MHz Changeable RFID PVC Blank Card for 1K S50 MF1 Mi-fare Door Access Control, Block 0 Sector
- ACS ACR122U NFC Reader Writer + 5 PCS Ntag213 NFC Tag + Free Software
- LEXI 100pcs Mi-Fare 1K S50 RFID Card, Rewritable UID Smart Card, Premium 13.56MHz PVC Blank Card for Door Access Control, Block 0 Sector

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-22*