125 kHz RFID Cards


Secure Access Control. Our 125 kHz proximity cards are contactless and perfect for access control applications at the office complex, schools or universities, at the warehouse or factory and for RFID time clock applications.

Endless Proximity Card Applications. Open doors, lockers, drawers and secure cabinets. Gain or restrict access to secure areas or use our prox cards with an RFID enabled time clock to check on staff attendance. Secure high quality prox cards at low cost.

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125 kHz RFID Prox Cards

Our prox cards are available in 125 kHz and include PVC and clamshell types. Get them printed with special features or leave them blank and print them at site. Our 125 kHz RFID prox cards give you the benefits of highly secure access control at lower costs.

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FAQ: About RFID Proximity Cards

FAQ: RFID Proximity Cards

Below is some information to help you understand RFID proximity cards:

How do RFID Proximity Cards Work?

Proximity cards are also called prox cards. They use a 125 kHz frequency to transmit a signal to a door access reader once the card is placed in proximity to the reader. When the card is placed on the reader, the card’s unique strand of numbers is passed to the access control panel, verifying if the number matches an approved card number (CSN) in the internal database.

What is the Difference Between a Proximity Card and a Smart Card?

Proximity Cards only store the facility code of the building or facility that the card should access and a card number. Smart cards are cable of storing this same information with the added ability to authenticate and store biographical information of the user.

What is 26-bit Wiegand?
26-bit is the industry standard for access control, representing an open encoding format. The data encoded using 26-bit format consists of 255 possible facility codes and within each there is a total of 65,535 unique card numbers. This is a relatively small number of unique cards, so additional authentication is often used.
How do I Know What Kind of Prox card I Have?  

Take a look for this information on the front or back of the proximity card you are using. There are many manufacturers of prox cards but each card should contain physical markings printed on the actual card itself.

Those markings will help you to determine the following:

  • The card manufacturer
  • The card format
  • The site and facility code
  • The card ID range number

If this information is not found on the card, you can also look at the label on the box of where your cards are stored or on the invoice from the card supplier.

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SYNOCARD is a Leading Supplier of 125 kHz RFID Cards

We are a leading supplier of 125 kHz cards. Customer satisfaction comes from our high quality products and excellent customer service and support. Please contact us so that we can offer a free consultation and help you to make your project successful.

Factory Direct Prices

Reduce your overall project spend and keep on budget with our factory direct prices.

Responsive Service & Support

We respond quickly and work hard to make you look like the office pro.

Short Lead-times

We get it done and shipped quickly so that you can get things done quickly too.

Need some help? Contact us for a free consultation or pricing.


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