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RFID Proximity Card | EM4102

Our EM4102 RFID cards are reliable and cost-effective solutions for contactless access control and identification. Every EM Marin proximity card comes with a unique serial number, providing a simple, affordable solution for access control and time attendance in environments where moderate security is sufficient.

  • Chip Type: EM4102 (Read-only, 125 kHz).

  • Frequency: 125 kHz (LF – Low Frequency).

  • Memory: 64-bit unique read-only ID.

  • Material: PVC / PET / ABS / Recycled options available.

  • Size: CR80 standard (85.6 × 54 mm).

  • Thickness: 0.76 mm (ISO standard).

  • Reading Distance: 2–10 cm (depending on reader)

  • Compatibility: Universal LF RFID readers (EM4100/EM4102 protocols)

  • Customization: Offset or silkscreen printing, UID printing, barcode.

  • Applications: Door access, time attendance, lockers, parking.

Frequently Asked Questions (FAQ): EM4102 RFID Cards

1. What is an EM4102 card?

The EM4102 card is a type of low-frequency RFID proximity card that operates at 125 kHz. It contains a unique 64-bit read-only identifier, which makes it perfect for simple, fast, and secure identification tasks. EM4102 cards do not store additional data or require battery power, making them highly cost-effective and maintenance-free. They are widely used in access control systems, employee attendance tracking, residential buildings, elevators, and parking gates.

2. Is the EM4102 card compatible with my RFID reader?

Yes. EM4102 cards follow the same communication protocol as EM4100/EM4200 chips, making them universally compatible with most LF 125 kHz RFID readers on the market. If your current system uses EM format cards or readers, the EM4102 will work without the need for any configuration or software changes. It’s a plug-and-play solution, ideal for quick deployment.

3. Can these cards be customized?

Absolutely. Our custom EM4102 RFID cards can be printed with your company logo, text, sequential UID numbers, barcodes, and more. Check out our card personalization page for more information.

5. What is the minimum order quantity?

Our standard minimum order quantity (MOQ) for custom-printed EM4102 cards is 500 units. However, if you require simpler formats such as blank white cards with pre-programmed UID, we can often accommodate smaller batches. For large volume projects, we offer bulk pricing and fast production timelines.

6. Are they waterproof and suitable for outdoor use?

Yes. Our PVC-based EM4102 cards are fully sealed and resistant to water, dust, UV exposure, and general wear and tear. They are ideal for both indoor and outdoor applications. If you require enhanced durability (e.g., for industrial or high-traffic use), we can also apply laminated overlays or protective coatings.

7. How long does production and shipping take?

Typical production for custom EM4102 RFID cards is 7 to 10 business days, depending on the level of customization. We also offer express manufacturing and international shipping options. Our logistics team ensures safe delivery to over 90 countries worldwide.

4. Is the EM4102 chip available in other formats?

Yes! The EM4102 chip is available not only in card format but also in RFID key fobs, adhesive tags, and silicone wristbands. This allows your organization to offer a variety of form factors for access or identification, depending on user preferences. For example, wristbands are ideal for gyms, spas, and events, while key fobs are more popular in residential and office settings.

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