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White RFID cards with a 125 kHz TK4100 chip
(Product ID: 1182)

125 kHz RFID systems are still very widespread for access control, user or asset identification, and in many other applications.

An RFID card is one of the most popular RFID transponders and can be easily carried in a wallet or attached to a lanyard, badge reel, or another accessory.

A good feature of the RFID card is that it can be easily printed with a company logo, personal names, serial numbers, or even employees’ photos. This way it offers the possibility to use it for digital identification and also visual identification with the naked eye.

White RFID cards with a 125 kHz chip TK4100 are read-only cards with a pre-encoded ID number that is used as a digital key.

There are multiple kinds of 125 kHz chips that work the same way and one of them is the TK4100, which is known as an inexpensive but reliable chip. To be able to use a new 125 kHz card with your existing system you have to enroll the card ID number into your system.

The cards are bright white, without numeration or other printed elements, and a top layer that has a coating which allows the subsequent printing on all kinds of card printers (thermo transfer or thermo retransfer printers).

You are welcome to buy white RFID cards from stock or send us an inquiry for customized cards with your logo, serial number, or other printed elements.
Price/item: 0,74 EUR (with vat 0,90 EUR)
Status: In stock
Dispatching time: 1-3 days


Product ID: 1182


74,00 EUR

Total with vat:
90,28 EUR
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Do you need print or other specific requirements?
Send inquiry


Quantity Price/pcs
≥ 1 0,84 EUR
≥ 10 0,82 EUR
≥ 25 0,80 EUR
≥ 50 0,78 EUR
≥ 75 0,76 EUR
≥ 100 0,74 EUR
≥ 150 0,67 EUR
≥ 200 0,63 EUR
≥ 300 0,57 EUR
≥ 500 0,50 EUR


RFID cards with a chip TK4100 are plastic cards with a standard credit card dimension (86 x 54 x 0.85 mm). They operate on a frequency of 125 kHz, which is a very popular frequency range for proximity cards that operate within proximity distances (usually up to 10 cm). The chip is read-only and it has a preprogrammed ID number which cannot be changed.

You are welcome to buy white RFID cards from stock or send us an inquiry for customized cards. Depending on the quantity and deadline, we can offer you several options for customization.

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

Also, our clients very often order the printing services in addition to the card.

When ordering small quantities of printed cards (1 to 500 pcs), we usually use high quality thermal retransfer printers which print CMYK colors in the stunning resolution of 600 dpi.  

The advantage of thermo retransfer printers is that they print one card at a time and allows us to print even a single card when needed. The disadvantages of thermal retransfer print are high costs of ribbons and slow speed, so it makes it less cost effective for higher quantities.

500 RFID cards and more are printed during a RFID card manufacturing process with an offset technology. These cards are usually printed with digital printing (CMYK colors) and when needed we combine the print with silk screen and other printing technologies. This way we print the gold, silver, and many other Pantone colors.

Our other customization services include:
-    Numeration or personalization form Excel table
-    Printing different kind of barcodes and QR codes
-    Reading and printing the chip ID numbers in various formats
-    Chip encoding - writing custom data, change keys.

The 125 kHz cards with a TK4100 chip have a preprogrammed ID key which can be interpreted by the readers in different formats. The most frequently read IDs are the 8-character long strings in Hexadecimal numbers or 10-character long decimal numbers, but our clients already requested many other reading formats, too.

When reading and printing the chip ID numbers on cards, we take extra care that the reading format is correct for the desired application.  

Reading test for White RFID cards with a 125 kHz TK4100 chip

We tested these cards with different kinds of readers and measured the reading distances. This is not an official test but was made to inform you what reading distances you may expect with your application.
RFID Reader Reading distance
Syris RD200-LF 7 cm
R80D 5 cm
Promag PCR 300AU-02  4 cm
Promag PCR-330A-00  3 cm

The reading distance between the RFID card 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 specification for white RFID cards with a 125 kHz TK4100 chip

Chip: TK4100
Compatible with: EM4100, EM4102, EM4200
Frequency: 125 kHz
Reading distance: up to 10 cm (usually up to 5 cm)
Card dimensions: CR80 (85.60 x 53.98 mm)
Thickness: 0.84 mm
Material: PVC
Printing options: offset print, thermo re-transfer, thermo transfer

If you need larger quantities or personalized 125 kHz cards, please send us an inquiry with your specification.

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