125khz RFID Proximity EM4200 ID Cards

Our 125kHz RFID Proximity EM4200 ID Cards provide a practical identification solution for access control, employee management, membership programs, and other proximity card applications. Designed in a standard credit card format, these low-frequency RFID cards combine convenient contactless identification with customizable printing and material options.

At DO RFID Group, we manufacture RFID cards for different identification requirements. We offer PVC, PET, and ABS materials, multiple surface finishes, personalized card printing, numbering, and selected encoding services to help businesses develop cards that match their systems and branding.

Whether you need blank EM4200 ID cards or customized RFID proximity cards for a large-scale project, we can support your requirements with flexible specifications and production options.

What Are 125kHz RFID Proximity EM4200 ID Cards?

125kHz RFID proximity cards are contactless identification cards that communicate with compatible low-frequency RFID readers. Each card contains an RFID chip and antenna that enable the reader to identify the card when it enters the reader’s operating range.

The EM4200 is a low-frequency identification chip commonly used in read-only identification applications. It is suitable for systems that identify cards through their unique chip data rather than requiring users to insert or swipe a card.

Our EM4200 ID cards are designed for everyday use in offices, commercial buildings, schools, parking facilities, and other environments where convenient identification is essential.

Key Product Advantages

• Contactless identification: Users present the card near a compatible reader without physical contact.
• Convenient operation: The proximity format supports quick identification during daily access procedures.
• Customizable appearance: Choose from blank cards, full-color printing, company logos, and personalized numbering.
• Multiple material options: Select PVC, PET, or ABS according to your project requirements.
• Flexible card specifications: Standard dimensions are available alongside customized sizes.
• Bulk production support: Our manufacturing capacity supports large-volume card orders.

Product Specifications

How Do EM4200 RFID Cards Work?

EM4200 RFID cards use low-frequency radio communication to provide identification data to a compatible reader. The reader generates an electromagnetic field, and the card responds when it enters the effective reading area.

The reader processes the received data and passes it to the connected access control or identification system. Depending on the system configuration, the software can use the card identifier to recognize an employee, member, visitor, or authorized user.

A typical identification process includes three steps:

1. Present the card: The user holds the RFID card near the reader.
2. Read the identifier: The compatible reader receives the card’s identification data.
3. Process the result: The connected system checks the identifier and performs the configured action.

This straightforward process makes 125kHz proximity cards suitable for applications that prioritize simple identification and convenient daily use.

EM4200 vs. TK4100 vs. ATA5577

Choosing the right RFID chip is important when ordering proximity cards. Although these chips operate in the 125kHz frequency range, they have different data-handling capabilities and system requirements.

EM4200 and TK4100 cards are commonly selected for identification systems that use fixed card identifiers. ATA5577 offers additional configuration flexibility for applications that support its programming features.

Our recommendation: Start with the chip used by your existing reader. If you are replacing cards in an established access control system, matching the chip type and data format is often the simplest approach.

EM4200 RFID Cards vs. 13.56MHz and UHF RFID Cards

RFID products operate at different frequencies to meet different identification and communication requirements. Our product range includes low-frequency, high-frequency, and ultra-high-frequency options.

Our 125kHz EM4200 cards are designed for low-frequency identification applications. HF and UHF cards are separate options for projects that require different communication standards or operating distances.

Before selecting a card, identify your reader’s supported frequency, chip protocol, and data format. This helps ensure that the cards and your existing equipment work together as intended.

Card Materials and Surface Finishes

We offer different card materials and finishes to accommodate a variety of branding, presentation, and operational requirements.

PVC RFID Cards

PVC is a popular choice for standard identification cards because it supports full-color printing, company logos, text, and personalized card details. It is suitable for employee badges, membership cards, and general-purpose proximity cards.

PET RFID Cards

PET provides an alternative material for projects with specific card construction or material preferences. We can discuss the appropriate card design based on your application and customization requirements.

ABS RFID Cards

ABS is another available material option for selected RFID card designs. It can be considered when choosing a suitable card construction for your project.

Available Surface Finishes

Our team can help you choose the material and finish that best match your card artwork, intended use, and production requirements.

Custom Printing and Personalization

Customized RFID cards help organizations combine identification functions with consistent visual branding. We offer several printing and finishing options for different card designs.

Custom Logo and Artwork

We can produce RFID cards featuring your company logo, brand colors, employee information, membership details, and other approved artwork. A consistent card design helps organizations maintain a professional appearance across their identification programs.

Numbering and Barcode Options

Sequential numbering can help organize card distribution and inventory. Barcodes can provide an additional identification method when required by your workflow.

Magnetic Stripe Combinations

For projects that use both RFID and magnetic-stripe identification, we offer selected magnetic-stripe configurations, including 300 Oe, 2750 Oe, and 4000 Oe options.

Please include your desired card layout, numbering format, and any additional features when requesting a quotation so we can recommend an appropriate configuration.

Applications of 125kHz EM4200 ID Cards

Our 125kHz proximity cards support a wide range of identification and access management applications.

Access Control

Businesses can use compatible RFID cards to identify employees and authorized visitors at designated access points. Cards can be assigned to users through the connected access control system.

Employee Identification

Printed employee cards combine a person’s name, photograph, employee number, and company branding with a compatible RFID identification function.

School and Campus Management

Schools and educational facilities can use proximity cards for selected access control and identification procedures. Card functions depend on the installed reader and management system.

Parking Facilities

Compatible proximity cards can support user identification at parking entrances and other controlled facilities. Integration depends on the existing access equipment.

Membership and Commercial Facilities

Clubs, commercial buildings, and membership organizations can issue personalized RFID cards to help identify registered users and manage access privileges.

Industrial and Institutional Environments

Hospitals, offices, and other institutions can use compatible RFID identification cards as part of their access management processes.

Reading Distance and Reader Compatibility

The reading distance of a 125kHz EM4200 card depends on the RFID reader, antenna design, installation conditions, and surrounding environment. For typical LF proximity cards, the reading distance is approximately 3–10 cm.

This short-range operation is appropriate for applications where users intentionally present a card close to a reader. It also helps define a clear identification point at an access entrance or designated workstation.

For reliable operation, we recommend matching the card to the reader’s supported chip type and communication protocol.

Consider the following factors when selecting your cards:

• Operating frequency: Confirm that the reader supports 125kHz LF cards.
• Chip compatibility: Select EM4200 or another supported chip type.
• Card data format: Match the expected identifier length and output format.
• Reading distance: Choose a reader appropriate for the intended presentation distance.
• System configuration: Confirm that the access control software can process the card identifier.

If you provide your reader model or current card specifications, we can help you identify a suitable card option.

Manufacturing Capacity and Quality Management

At DO RFID Group, we support RFID card projects ranging from customized batches to high-volume production orders. Our monthly manufacturing capacity reaches 8 million cards, helping us serve distributors, system integrators, and organizations with ongoing card requirements.

We focus on consistent specifications, clear customization requirements, and coordinated production arrangements.

Our manufacturing and supply capabilities include:

• Multiple RFID chip and material options.
• Standard and customized card dimensions.
• Logo printing and personalized card details.
• Selected encoding and additional card features.
• Bulk packaging for commercial distribution.
• Express, air freight, and sea freight shipping options.

We work with customers to define card specifications before production, helping align the finished cards with their intended identification systems and branding requirements.

Ordering Process for Custom RFID Cards

Ordering customized EM4200 RFID cards is straightforward when the technical and design requirements are clearly defined.

Step 1: Select the chip. Tell us whether you require EM4200 cards or another compatible 125kHz chip.

Step 2: Choose the material and finish. Select PVC, PET, or ABS, together with your preferred surface finish.

Step 3: Provide your artwork. Send your logo, card layout, numbering requirements, and other design details.

Step 4: Confirm the quantity. Let us know your order volume and whether you expect repeat orders.

Step 5: Confirm technical requirements. Share your reader model, card format, and any encoding requirements.

Step 6: Arrange production and shipping. We confirm the specifications, production schedule, packaging, and shipping method for your order.

Providing these details at the quotation stage helps us recommend a suitable configuration and coordinate production more efficiently.

Production Lead Time, Packaging, and Shipping

We support international orders with practical production and shipping arrangements.

Production and shipping arrangements can be coordinated according to your order quantity, destination, and customization requirements.

For bulk orders, we can discuss packaging arrangements and shipping methods that suit your distribution schedule.

Why Choose DO RFID Group for EM4200 RFID Cards?

We provide RFID card manufacturing and customization services for customers seeking a practical supply partner for identification projects.

Flexible Product Selection

Our product range includes LF, HF, and UHF RFID cards, giving customers access to different chip technologies for different applications.

Customized Card Design

We support company logos, full-color artwork, numbering, barcodes, and selected additional features to help create cards that match your brand and operational requirements.

High-Volume Manufacturing

Our monthly production capacity of up to 8 million cards supports large orders and ongoing supply programs.

International Order Support

We offer multiple shipping methods and trade terms to accommodate different purchasing and logistics requirements.

Application-Focused Assistance

We can help you compare chip options, select suitable card materials, and organize the specifications needed for your project.

Frequently Asked Questions

What frequency do EM4200 RFID cards use?

EM4200 RFID cards operate at 125kHz in the low-frequency RFID band. They are designed for compatible LF identification readers.

Can EM4200 cards be used for access control?

Yes. EM4200 cards are commonly used for access control and identification applications that support the chip and its identification data format.

Are EM4200 cards rewritable?

EM4200 chips are generally used for read-only identification. If your project requires rewritable data or configurable memory, we can discuss alternatives such as ATA5577, subject to your reader’s compatibility.

What is the typical reading distance?

The typical reading distance for LF proximity cards is approximately 3–10 cm. Actual performance depends on the reader, antenna, installation, and operating environment.

Can I customize the card with my company logo?

Yes. We offer full-color CMYK printing, screen printing, digital printing, numbering, and selected additional customization options.

What card materials are available?

Our available materials include PVC, PET, and ABS. Standard surface finishes include glossy, matte, and frosted.

Can you supply blank EM4200 cards?

Yes. We offer blank RFID cards as well as customized cards with printed artwork and selected personalization options.

What is the standard card size?

Our standard card size is 85.5 × 54 × 0.84 mm. Customized dimensions are also available for selected projects.

How long does production take?

Our typical production lead time is approximately 7–9 working days. The schedule depends on the order quantity, card configuration, and customization requirements.

Can you supply cards in bulk?

Yes. Our monthly manufacturing capacity reaches 8 million cards, supporting bulk orders for distributors, integrators, and commercial customers.

Request a Quote for 125kHz EM4200 RFID Cards

Looking for a reliable supply of 125kHz RFID proximity cards for your access control or identification project? We can help you select the chip, material, printing method, and card configuration that match your requirements.

Contact DO RFID Group with the following information to receive a tailored quotation:

• Required chip type and operating frequency.
• Order quantity.
• Card material and surface finish.
• Logo artwork and personalization requirements.
• Reader model or existing card specifications.
• Shipping destination and preferred delivery method.

Whether you need blank EM4200 ID cards, customized employee badges, or bulk RFID proximity cards, we are ready to support your project with flexible manufacturing options and international order services.

Contact us today to discuss your 125kHz EM4200 RFID card requirements and request a quotation.