What is the difference between this 125KHz ID card and a 13.56MHz IC card?

This 125KHz ID card is a read-only device that transmits a fixed serial number, making it ideal for basic identification. A 13.56MHz IC card contains rewritable memory and supports encryption for two-way data transfer. You must ensure your card reader operates at 125KHz, as the two technologies are not cross-compatible.

Can I rewrite the data or change the serial number on this ID card?

No, you cannot rewrite the data or change the serial number on this card. The 64Kbit memory is strictly read-only, meaning the unique identification number programmed at the factory is permanent and cannot be altered.

How do I register this card into my access control system?

You can register this card into your system by either swiping it over your USB enrollment reader or by manually typing the serial number printed on the card's surface into your access control software.

Can I purchase these blank ID cards in bulk at your Hong Kong store?

Yes, you can purchase these 125KHz ID White Cards in bulk quantities at Sun Cheong Computer Co. Ltd. (新昌電腦有限公司) in Sham Shui Po. Our store supplies many local businesses, property management companies, and residential estates with reliable access control hardware.

Can I print employee photos on this card using a standard inkjet printer?

No, you cannot use a standard inkjet or laser printer to print on these cards, as the ink will smear on the plastic surface. You must use a specialized thermal dye-sublimation ID card printer (such as Zebra or Fargo) to print photos and logos onto the PVC material.

125KHz Blank ID Card | Read-Only RFID Proximity Badge

Name: 125KHz Blank ID Card | Read-Only RFID Proximity Badge
Brand: Sun Cheong Computer Company Limited
SKU: 21ST000392
Price: 5.0 HKD
Availability: InStock

Short Product Description

The 125KHz RFID Blank ID Card is a read-only proximity badge designed for legacy access control and time attendance systems. Featuring a pre-programmed 64Kbit read-only chip and a printed serial number, this standard CR80 PVC card provides instant, driver-free identification. Available in bulk at Sun Cheong Computer Co. Ltd.(新昌電腦有限公司) in Sham Shui Po, our staff can help verify if your existing card readers use the 125KHz frequency before you purchase.

Key Features

125KHz Low Frequency: Operates on the standard 125KHz band for seamless compatibility with legacy proximity card readers.
Read-Only Architecture: Features a pre-programmed 64Kbit memory that cannot be rewritten, ensuring the unique ID remains permanent.
Printed Serial Number: Displays a visible ID number on the card surface for quick manual data entry into access control software.
Print-Ready PVC Surface: The smooth, standard CR80-sized (85.5x54mm) white PVC is perfect for thermal ID card printers.
Rapid Recognition: Achieves a fast 106ms read time at a distance of 2.5cm to 5cm for bottleneck-free employee clock-ins.
High Durability: Built with ultrasonic auto-wire planting technology, ensuring a lifespan of over 100,000 reads and 10 years of data retention.

Full Product Description

Reliable Access Control for Legacy Systems

This 125KHz Proximity ID Card provides a straightforward, highly reliable identification solution for standard building access and time attendance systems. Operating on the universally recognized 125KHz low-frequency band, it transmits a unique, pre-programmed serial number to your card reader in just 106 milliseconds. This read-only architecture ensures that the card's identity cannot be accidentally overwritten or maliciously altered, making it perfect for basic employee badging and visitor management.

Pre-Printed Serial Number and Printable PVC

Every Blank RFID ID Card comes with a unique identification number visibly printed on the surface, allowing administrators to manually register users into the system without needing an external card reader. The card is constructed from high-quality, waterproof PVC material measuring a standard 85.5mm x 54mm. This smooth white surface is fully compatible with thermal dye-sublimation ID card printers, enabling HR departments to print custom employee photos and company logos directly onto the badge.

Pro Tip from Our Technicians

When purchasing replacement access cards, our Sham Shui Po technical team strongly advises checking your card reader's frequency specifications first. This is a 125KHz read-only ID card, which is completely incompatible with 13.56MHz IC card systems. Because this card is "read-only" and cannot be encrypted, it is best suited for internal office doors or basic time clocks rather than high-security exterior gates.

Technical Specifications

Product Type: Blank Proximity ID Card (RFID)
Chip Type: ID Card Chip
Operating Frequency: 125KHz
Storage Capacity: 64Kbit (Read-Only)
Encryption: Not Encryptable
Communication Speed: 106 Kbps
Read Distance: 2.5cm - 5cm
Read Time: 106 ms
Lifespan: > 100,000 reads
Data Retention: > 10 years
Operating Temperature: -20°C to 85°C
Material: PVC (Ultrasonic auto-wire planting / Auto spot welding)
Dimensions: 85.5mm x 54mm
Weight: 6.4g

Delivery Options

Local delivery within Hong Kong and in-store pickup.
Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
In-store pickup details (location and time) will be confirmed by email or phone message.
Delivery times are estimates and may be affected by weather or unforeseen circumstances.

FAQ Section

What is the difference between this 125KHz ID card and a 13.56MHz IC card?This 125KHz ID card is a read-only device that transmits a fixed serial number, making it ideal for basic identification. A 13.56MHz IC card contains rewritable memory and supports encryption for two-way data transfer. You must ensure your card reader operates at 125KHz, as the two technologies are not cross-compatible.
Can I rewrite the data or change the serial number on this ID card?No, you cannot rewrite the data or change the serial number on this card. The 64Kbit memory is strictly read-only, meaning the unique identification number programmed at the factory is permanent and cannot be altered.
How do I register this card into my access control system?You can register this card into your system by either swiping it over your USB enrollment reader or by manually typing the serial number printed on the card's surface into your access control software.
Can I purchase these blank ID cards in bulk at your Hong Kong store?Yes, you can purchase these 125KHz ID White Cards in bulk quantities at Sun Cheong Computer Co. Ltd. (新昌電腦有限公司) in Sham Shui Po. Our store supplies many local businesses, property management companies, and residential estates with reliable access control hardware.
Can I print employee photos on this card using a standard inkjet printer?No, you cannot use a standard inkjet or laser printer to print on these cards, as the ink will smear on the plastic surface. You must use a specialized thermal dye-sublimation ID card printer (such as Zebra or Fargo) to print photos and logos onto the PVC material.

Target Users / Applications

Corporate HR Departments: Issuing basic, printed employee ID badges for time attendance machines that do not require encrypted data storage.
Property Management Companies: Providing low-cost, read-only proximity cards for residential estate lobby access and elevator control.
Event Organizers: Creating custom-printed VIP access badges for exhibitions and concerts using standard 125KHz entry gates.

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125KHz RFID Blank ID Card | Read-Only Proximity Badge with Serial No.