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4 Byte UID Changeable 1K S50 Key Fob

19 reviews

$2.00 – $22.50

SKU: MT_KF_S50 Category:
Brand: MTools Tec

UID and UFUID types have backdoor command support to change the UID.

CUID type can be changed with all NFC devices.

Magic Cards 10% OFF 🏷️

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 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 China Mifare Key Fob

MTools
RFID Tools
Mifare Classic Tool

Specifications

Card Type

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Amount

1 pc, 5 pcs, 10 pcs
Memory

Device Support

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Card Type

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Amount

1 pc, 5 pcs, 10 pcs
Memory

Device Support

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Software

Android App

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iOS App

Android App

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iOS App

Card Type

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Amount

1 pc, 5 pcs, 10 pcs
UID Changeable

Yes (Backdoor Command)
Working Temperature

-20°C-70°C
Memory

Device Support

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Android App

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iOS App

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
  1. 김 성헌
    Verified owner
    Featured Review

    추천합니다. very good~~

    (0) (0)
  2. Michael Garcia
    Verified owner

    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)
  3. Michael Garcia
    Verified owner

    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)
  4. Sarah
    Verified owner

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

    (0) (0)
  5. Max
    Verified owner

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

    (0) (0)
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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.

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

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.

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.

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.

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.

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.

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.

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4 Byte UID Changeable 1K S50 Key Fob
$2.00 – $22.50 Select options