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4 Byte UID Changeable 1K S50 Key Fob - Image 2

4 Byte UID Changeable 1K S50 Key Fob

Rated 4.94 out of 5 based on 17 customer ratings

(19 Reviews)

$2.00 – $22.50

Card Type

Amount

Clear

UID and UFUID types supports Gen1A backdoor command

UFUID Type can be set as CUID Type or common Type

CUID type is DirectWrite by all NFC devices

Frequently Bought Together

There are 3 types of UID Changeable S50 China Mifare Key Fob, CUID Key Fob, UID Key Fob, UFUID Key Fob. The main difference is the method of changing UID and backdoor commands support.

Specification

Chip	Genuine Mifare 1K
Size	85.5 x 54 x 0.8mm
Frequency	13.56MHz
Protocol	ISO14443A
Memory	1024 bytes
Material	PVC
Operating temperature	-20 ~65 ℃
Writing Cycle	≥100,000 times

Ordinary card VS Chinese magic card

How to change the UID with PN532?

We released PN532 CLI for PN532 and PN532Killer to change the UID super easy.

How to clone card to CUID card on Android?

The block 0 of the CUID card is changeable, so you just need to write block 0 or full dump to the CUID card with the NFC device.

If the BCC byte or SAK byte is invalid, MTools will not write block 0 to prevent damaging the card.

Apps for Magic Mifare Key Fob

MTools
RFID Tools
Mifare Classic Tool

Specifications

Card Type	UID, CUID, UFUID
Amount	1 pc, 5 pcs, 10 pcs
Memory	1KB
Device Support	ACR122U, iCopy-XS, PN532, Proxmark3 X, Chameleon Ultra, Proxmark3 RDV4
Card Type	UID, CUID, UFUID	Amount	1 pc, 5 pcs, 10 pcs
Memory	1KB	Device Support	ACR122U, iCopy-XS, PN532, Proxmark3 X, Chameleon Ultra, Proxmark3 RDV4

Software

Android App	MTools, MTools BLE
iOS App	MTools BLE
Android App	MTools, MTools BLE	iOS App	MTools BLE

Card Type	UID, CUID, UFUID
Amount	1 pc, 5 pcs, 10 pcs
UID Changeable	Yes (Backdoor Command)
Working Temperature	-20°C-70°C
Memory	1KB
Device Support	ACR122U, iCopy-XS, PN532, Proxmark3 X, Chameleon Ultra, Proxmark3 RDV4
Android App	MTools, MTools BLE
iOS App	MTools BLE

19 reviews for 4 Byte UID Changeable 1K S50 Key Fob

4.9

Based on 19 reviews

5 star	94	94%
4 star	5	5%
3 star		0%
2 star		0%
1 star		0%

1-5 of 19 reviews

Michael Garcia
Verified owner

March 5, 2023

If you need a Mifare key fob that’s easy to use and has a changeable UID, this is the one for you.

(0) (0)
Michael Garcia
Verified owner

March 5, 2023

If you need a Mifare key fob that’s easy to use and has a changeable UID, this is the one for you.

(0) (0)
Sarah
Verified owner

March 4, 2023

This key fob works perfectly with my system. I was able to clone my old key fob onto it with ease.

(0) (0)
Max
Verified owner

February 28, 2023

This key fob has saved me so much time and effort. Changing the UID is a breeze.

(0) (0)
Sam
Verified owner

February 27, 2023

It’s so nice to have a key fob that I can easily change the UID on. It’s saved me so much time and hassle.

(0) (0)

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4 Byte UID Changeable 1K S50 Key Fob

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Q & A

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How to deliver the virtual products?

The virtual products are delivered by email in time when order with only virtual products.

What are the shipping options MTools Tec offers?

We offer both standard and expedited shipping options for our customers. The delivery times may vary depending on the shipping address.

Can I track my shipment?

Yes, once your order has been dispatched, we will send you a shipping confirmation email with your tracking number. You can use this number to track your shipment’s progress.

How long does it take to deliver my order?

The delivery time varies depending on your location and the chosen shipping option. Typically, it takes about 5-10 business days for standard shipping and 2-5 business days for expedited shipping.

Are there any shipping restrictions?

Shipping is usually available to all parts of the world. However, restrictions may apply to certain countries or regions due to international laws or shipping carrier limitations.

What should I do if I haven’t received my shipment yet?

If you haven’t received your order within the expected delivery timeframe, please contact our customer support team. We will help to track your shipment and provide updates.

What if my order arrives damaged?

If your order arrives damaged, please contact our customer support immediately. We will initiate the return process and take necessary steps to rectify the situation.

Can I change the shipping address after my order has been placed?

Depending on the status of your order, it may be possible to change the shipping address before the package dispatched oversea. Please contact our customer support as soon as possible to request changes.