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Dual frequency key fobs with a 125 kHz TK4100 chip and NFC NTAG213 chip
(Product ID: 1693)

125 kHz & NFC
Are you looking for a handy RFID/NFC transponder with a two-chip combination that allows you to use the same key fob for your 125 kHz patio access control system and your brand-new apartment smart lock that works with NFC chips?

Check out our dual frequency key fobs with a 125 kHz TK4100 chip and a NFC NTAG213 chip.

The dual frequency key fobs are available in multiple colors (blue, gray, black, green, red, orange, and yellow) and have a popular tear-shape housing measuring 40 x 32 x 4.5 mm.

The TK4100 chip is a read-only chip that operates at a frequency of 125 kHz. It has a pre-programmed chip ID number and is used in countless applications worldwide.

The NFC NTAG213 chip is NFC Type 2 chip and is compatible with the ISO/IEC 14443-3A standard. It has a preprogrammed 7-byte long unique ID number and a storage capacity of 144 bytes of data.

For orders above 100 pcs, we can do various customization services like printing company logos, serial numbers, or other personalization.

You are welcome to buy the dual frequency key fobs from stock or send us an inquiry for customized key fobs.
Price/item: 0,95 EUR (with vat 1,16 EUR)
Status: In stock
Dispatching time: 1-3 days

Keyfobs Colour:

Size:

Product ID: 1693

Quantity:

Total:
95,00 EUR

Total with vat:
115,90 EUR
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Do you need print or other specific requirements?
Send inquiry

QUANTITY DISCOUNT

Quantity Price/pcs
≥ 1 1,50 EUR
≥ 10 1,25 EUR
≥ 25 1,15 EUR
≥ 50 1,00 EUR
≥ 100 0,95 EUR
≥ 200 0,90 EUR
≥ 300 0,85 EUR
≥ 500 0,76 EUR
≥ 1000 0,65 EUR
≥ 2000 0,63 EUR

INFO

Dual frequency key fobs contain two widely used contactless chips and can be used to unlock the smart locks, pay for a coffee at a vending machine, and for various other applications. 

The TK4100 RFID chip is a 125 kHz read-only chip that works like the EM4200 and his predecessors EM4100 and EM4102. It has a preprogrammed unique ID number which is used as a key in access control systems and many other RFID applications.

The NTAG213 NFC chip is made by NXP Semiconductors and is probably the most popular NFC Type 2 chip. It is compatible with the ISO/IEC 14443-3A standard, and has a preprogrammed 7-byte long unique ID number and a storage capacity of 144 bytes of data which is equal to a 136 character-long URL address.

The key fob housing has a very common tear shape measuring 40 x 32 x 4.5 mm and it is made from plastic material (ABS). It contains a metallic ring to attach it to keys or other accessories. 

The dual frequency key fobs are available in multiple colors (blue, gray, black, green, red, orange, and yellow). 

By default, they do not contain the numeration or other printed elements, but if you need customization, please let us know and we will send you an offer.

Options for customization (for pricing, please send an inquiry)

Beside the key fobs from stock, you can order customized key fobs with a housing in different color or shape, we can print on key fobs your company logo, serial number, or chip ID code. 

Since the chip ID code can be read in more than 50 different ways, we take extra care that we print the code in the proper format. Many NFC devices (including NFC phones and tablets) read the chip ID as 14-digit hexadecimal number (known as 14 HEX Reverse Byte format). The 125 kHz readers usually read the ID code as the 10-digit decimal number (known as 8H-10D format).

Reading test for dual frequency key fobs

We tested our dual frequency key fobs with different kinds of readers and measured the reading distances. This is not an official test, and was made to inform you what reading distances you may expect with your application.

 
RFID Reader Reading distance
Syris RD200-M1  
Syris RD300-H1-G  
ACR1252U-M2  
R80U  
Syris RD200-LF 5 cm
R80D 5 cm
Promag PCR 300AU-02  4 cm
Promag PCR-330A-00  3 cm

The reading distance between the key fob and the reader is affected by many different factors, like the size of the antennas and quality of the chips, the interferences of metal, and electromagnetic signals, etc.


Technical specifications for dual frequency key fobs with NTAG213 and TK4100 chips

Chip: NTAG213  
Chip manufacturer: NXP Semiconductors
Standards: ISO/IEC 14443-3A (NFC Type 2).
Memory size: 144 bytes of data which is equal to a 136 character-long URL address.
Security: 7-byte long preprogrammed chip Unique ID number, ECC-based originality signature, 32-bit password protection to prevent unauthorized memory operations and Field programmable read-only locking function
Operating frequency: 13.56 MHz
Reading distance: up to 10 cm (usually up to 5 cm)

Chip: TK4100
Compatible with: EM4100, EM4102, EM4200
Frequency: 125 kHz
Reading distance: up to 10 cm

Key fob dimensions: 40 x 32 mm
Thickness: 4.5 mm
Material: ABS

Technical documentation for NTAG213 chips and software tools are available here:

https://www.nxp.com/products/rfid-nfc/nfc-hf/ntag-for-tags-labels/ntag-213-215-216-nfc-forum-type-2-tag-compliant-ic-with-144-504-888-bytes-user-memory:NTAG213_215_216

If you need larger quantities or personalized dual frequency key fobs, please send us an inquiry with your specification.

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