---
product_id: 97624594
title: "RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs"
brand: "keyshow"
price: "15 zł"
currency: PLN
in_stock: false
reviews_count: 8
url: https://www.desertcart.pl/products/97624594-rfid-125khz-reader-writer-rfid-copier-em4100-reader-keyfob-duplicator
store_origin: PL
region: Poland
---

# RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs

**Brand:** keyshow
**Price:** 15 zł
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs by keyshow
- **How much does it cost?** 15 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/97624594-rfid-125khz-reader-writer-rfid-copier-em4100-reader-keyfob-duplicator)

## Best For

- keyshow enthusiasts

## Why This Product

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

## Description

Note: It support andcompatible with HID Proximity & universal unencrypted 125KHz RFIDcards/tags only! Not work for other frequencies.How to use ?1. Switch on ,red power indicator on.2. Put the original RFID ID card or key-fob in the reading area.3. Press read button. read indicator with beep sounds.4. Put the writable RFID card or key-fob in the reading area.5. Press write button. write indicator with beep sounds.6. Copy completed.How to distinguish the types ofcards/keyfobs?1. Using strong light transmission card, this product can copy the cardwhose coil is round, other shapes can not be copied.(the method of strong lighttransmission only applies to cards, not cards with other shapes) as shown inthe picture.2. This product can duplicate cards/keyfobs printed with 10digits beginning 00 on the surface, other cards/keys fobs can't copy.3. This product can be copiedhid-PROX card, hid other types of cards can't be copied. Not compatible with any card with amount, including creditcard, hotel access card, patrol system, credit card, bus card, etcPackage Included:1x RFID ID Reader Writer(battery not include)5x Writable blue key-fob2x Writable funny phone sticky key5x Writable Blank card1x User Manual

## Features

- About this item
- MINI HANDHELD:115*70*30mm RFID ID card reader writer with mini-sized handheld ergonomic design for easy operation and carrying.     COMPATIBLE: 125kHz frequency of chip type T5577 and EM4100, key fod of hid prox and card of hid prox II, other frequencies and chip types are not available     HEAVY-DUTY: 2pcs AAA battery required ,this small handheld ID card reader writer can be duplicated about 20000 times,low consumption long life.     FREE ACCESSORIES: With white card key-fob and sticker attached with RFID 125Khz reader writer to make key cool and functional.     NOTE: Read and write most 125khz RFID cards, but not all

## Images

![RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs - Image 1](https://m.media-amazon.com/images/I/41-Bzk4u5JL.jpg)
![RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs - Image 2](https://m.media-amazon.com/images/I/41OIiPa6CbL.jpg)
![RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs - Image 3](https://m.media-amazon.com/images/I/41dgDqF7VML.jpg)
![RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs - Image 4](https://m.media-amazon.com/images/I/61yuXWAqs7L.jpg)
![RFID 125KHz Reader Writer - RFID Copier EM4100 Reader Keyfob Duplicator Compatible with Proximity Card Including Key-fob 5pcs 3M Sticker 2pcs Blank Card 5pcs - Image 5](https://m.media-amazon.com/images/I/31ujhKO3qsL.jpg)

## Customer Reviews

### ⭐⭐ 







  
  
    Make sure you get the right version for HID...
  

*by D***L on Reviewed in the United States on June 19, 2020*

The media could not be loaded.
                
            
                
            
        
    
    








  
  
     Looking at the little manual that came with the device, it looks like I was sent the wrong one. Apparently, they make different variants of this device that have different capabilities. If the device beeps twice when it boots up, then it would only copy "EM" based RF cards (and not HID ProxCards). On the other hand, three beeps mean it also support HID and AWID. You may want to make sure you check your device when you receive it to make sure it works as intended. If you press Read on your card but it does not respond with any beeps, then it means that the reader is unable to read the card you are trying to clone...

### ⭐⭐ 







  
  
    Did not work
  

*by A***M on Reviewed in the United States on March 30, 2022*

While this product was simple to use because it only involved switching it toon and then pressing read and write buttons, it took quite some time (15-20) minutes for each read and write process, hence the 3 star rating for easy to use.  After 43 minutes of trying to successfully get a “pass” beep/light to indicate the read and write process took, none of the RFID access tags were effective. I will be returning as this did not work for me.

### ⭐⭐⭐⭐⭐ 







  
  
    Did the job
  

*by A***N on Reviewed in the United States on June 23, 2019*

We lost one of our keyfobs for our apartment complex. They typically charge something like $80-120 for replacing the thing, even though you can buy 100 of the exact same one for less than $100. I bought this for something like $30 and just copied mine. It was  Prox HID tag (125 Khz) and this little thing copied it fine, and came with plenty of tags. Now, not only did we replace the one we have, but we have spares for guests, and even one on our dog's leash, in case one of us is walking him and forgot to grab keys.Easy to use, worked great. There are cheaper ones that look to be the same. The difference in price seems mostly to be the number of keyfobs/cards/stickers each comes with. I wanted lots, because I wanted to play around with RFID. I'd suggest you look at the others and buy the listing that fits your needs. Odds are it's an identical machine from an identical factory.

---

## 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.pl/products/97624594-rfid-125khz-reader-writer-rfid-copier-em4100-reader-keyfob-duplicator](https://www.desertcart.pl/products/97624594-rfid-125khz-reader-writer-rfid-copier-em4100-reader-keyfob-duplicator)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-16*