Tk4100 T5577 RFID Tag Durable Coin Tag for Access Control
Writable T5577 125 kHz RFID Tag for Close-Range Identification
A t5577 RFID tag is a passive LF credential used in compatible 125 kHz reader and writer systems.
It is selected when a project needs a writable or configurable tag instead of a fixed read-only ID credential.
Common formats include RFID 125 tag coin and key fob styles, depending on whether the tag will be installed on an object or carried by a user.
Key Features
- Writable 125 kHz Credential
Supports read/write use when paired with compatible writer equipment and the correct data format. - Coin Tag or Key Fob Format
Available as an RFID 125 tag coin for fixed-position use or as a key fob for user-carried access. - Custom Programming Support
Can be supplied blank or programmed according to the required ID format, system record, or database-matching requirement.
Technical Specifications
| Feature | Specification |
|---|---|
| Product Type | T5577 RFID tag / writable 125 kHz RFID tag |
| Frequency | 125 kHz LF |
| RFID Type | Passive LF RFID |
| Chip Option | T5577 / ATA5577-type writable chip |
| Optional Read-Only Chip | TK4100 or EM4100-compatible options by project requirement |
| Memory Type | EEPROM-based; available memory depends on chip version and configuration |
| Reading Method | Close-range scan by compatible 125 kHz RFID reader |
| Writing Method | Requires compatible 125 kHz RFID writer and correct data format |
| Common Form Factor | 25 mm coin tag or key fob style |
| Material | Durable plastic or PVC housing, depending on selected format |
| Mounting Option | Adhesive backing available for coin-tag installation |
| Printing Options | Logo, serial number, QR code, barcode, or custom text |
| Encoding Options | ID programming, format configuration, code matching, or database association |
| Compatible Reader | 125 kHz LF reader supporting the selected chip format and data structure |
Reader and writer compatibility should be confirmed before production. A t5577 125 khz RFID tag is not automatically compatible with NFC, MIFARE, HF, or UHF RFID systems.
Typical Applications
- Access Control Credentials
Used for authorized access systems that require writable 125 kHz credentials. - Time Attendance Systems
Used as employee or staff identification tags for close-range attendance terminals. - Locker and Cabinet Identification
Used for lockers, storage cabinets, equipment cabinets, or access-controlled compartments. - Membership and User ID Systems
Used by clubs, gyms, residential facilities, or service systems that already support 125 kHz RFID readers. - Embedded Device Identification
Used in machines or devices where a built-in LF reader checks whether an authorized tag is present.
T5577 RFID Tag vs TK4100 RFID Tag
| Comparison Point | T5577 RFID Tag | TK4100 RFID Tag |
|---|---|---|
| Frequency | 125 kHz LF | 125 kHz LF |
| Data Type | Writable or configurable | Read-only ID |
| Writer Requirement | Requires compatible 125 kHz writer for programming | Usually not writable |
| Flexibility | Higher when the system supports T5577 configuration | Lower, but simpler for fixed-ID systems |
| Buyer Checkpoint | Confirm writer, reader, and data format | Confirm reader format and ID compatibility |
Choose T5577 when the project needs a writable 125 kHz credential.
Choose TK4100 when the system only needs a fixed read-only ID tag.
RFID 125 Tag Coin vs Key Fob Format
| Comparison Point | RFID 125 Tag Coin | Key Fob Format |
|---|---|---|
| Shape | Compact round coin tag | Small handheld keychain tag |
| Main Use | Installed on objects, panels, lockers, or devices | Carried by users for daily access |
| Mounting Method | Can be embedded, placed in a holder, or supplied with adhesive backing | Attached to a keyring or lanyard |
| Handling | Low-profile and fixed-position use | Portable and easy to carry |
| Buyer Checkpoint | Confirm tag diameter, mounting surface, and reader position | Confirm keyring design, housing material, and user handling needs |
An RFID 125 tag coin is suitable when the tag needs to stay on an object, locker, panel, or device.
A key fob format is better when the RFID credential needs to be carried by a person for daily access or identification.
Typical Application Case: Access Credential Programming
A facility can use T5577 RFID tags when its access control system requires a writable 125 kHz credential.
Before production, the required data format is confirmed from the reader, writer, or access software.
Each tag can then be programmed or matched to a user ID, room permission, locker record, or staff account.
After sample testing, the programmed tags can be issued as coin tags or key fobs depending on how users will carry or install them.
This workflow is suitable for authorized system replacement, credential migration, or controlled access projects where chip format and reader compatibility must be checked before bulk production.
Need T5577 RFID Tags for an Existing 125 kHz System?
Send one working sample tag or the required data format before production.
JIA RFID can check reader and writer compatibility, programming requirements, and whether the project should use a writable T5577 tag or a read-only 125 kHz option.
Sample testing is recommended before bulk production when replacing or matching existing credentials.
Frequently Asked Question
The top questions about t5577 RFID tag
A T5577 RFID tag is a passive 125 kHz LF RFID credential that can be written or configured with compatible RFID writer equipment.
Yes, when the chip configuration, password status, writer equipment, and data format allow rewriting. Locked or password-protected configurations may limit rewriting.
No. Frequency alone is not enough. The reader must support the programmed format, modulation, and data structure used by the tag.
Hot To Customize RFID Tags
Know the customization process about RFID tags
Size & Shape
Send your requirements on size and shapes. Tags are typically designed in simple shapes and sizes to match the internal antenna. However, they can also be customized in various sizes and shapes to best fit the intended application and the asset being tagged. For instance, RFID hang tags can be customized in size, shape, and attachment method to perfectly suit specific applications.
Layout & Chips
In the label format designer, select the layout that matches the type and size of the RFID label you wish to create. Our factory provides a variety of label templates, including RFID-specific options. We also offer a range of RFID chips tailored to meet your specific requirements.
High Customization
Custom tags are designed from the ground up to meet the needs of specific applications, with unique variables for nearly every option listed below. A semi-custom tag typically starts as a standard tag but offers additional customization options, such as custom printing, encoding, or specific backings and attachment methods.
Sample Confirmation
Before proceeding with full-scale production, we offer a sample confirmation process to ensure that the RFID tags meet your exact specifications and application requirements.
Mass Production
Our mass production process for RFID tags is designed to deliver high-quality, reliable products at scale, ensuring that your business has a steady and consistent supply of RFID solutions tailored to your needs. Leveraging state-of-the-art manufacturing facilities and advanced technology, we maintain efficiency and precision throughout the production cycle.
RFID Tags Application
Use customized RFID tags in different industies.
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Vehicles with RFID tags enable secure access to gated areas. RFID tags also streamline truck weighing for efficient billing.
Temperature Sensor Tags
RFID temperature sensors, used in industries like steel, send data to alert users of unsafe conditions via RFID readers.
RFID Supply Chain Tags
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RFID Personnel Tracking
RFID strengthens access security: employee badges for workspace entry, hotel wristbands for pool access.
RFID Pallet Tracking Tags
Our RFID tags are ideal for tracking pallets and containers, offering durable, low-profile solutions for warehouse management.
Custom RFID Tags & Labels
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RFID Laundry Tags
Our RFID laundry tags, with a soft rubber casing, are flexible and durable, surviving 200 wash cycles and 60 bars of pressure.
Industrial RFID Tags
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Animal RFID Tags
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RFID Asset Tracking
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Consumables RFID Tags
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Manufacturing RFID Systems
RFID tags are used on almost all products—apparel, furniture, appliances, and cars—and are crucial for automated manufacturing systems.
Why Choose Us
As an original manufacturer with over 13 years of experience, we specialize in designing and manufacturing passive RFID (NFC, HF, and UHF) tags for applications in inventory, laundry, access control, identification, and industrial automation management.
We are a pioneering leader in RFID technology and smart product solutions. For nearly 20 years, we have been at the forefront of custom RFID and NFC technology, offering innovative solutions in every imaginable form. Our expertise lies in developing and producing RFID/NFC products that are tailored to meet your specific requirements.
As the world’s leading RFID supplier, our factory is passionate about RFID technology. We deliver a wide range of products, including NFC tags, NFC cards, RFID/NFC labels, RFID inlays, various apparel tags, laundry tags, and RFID devices, to clients around the globe. Our RFID products are widely used in marketing campaigns, healthcare monitoring, workforce management, stock control, access control, apparel systems, laundry systems, inventory systems, IoT systems, and security applications.
Our Benefits
We provide products with competitive pricing and reliable quality, backed by an after-sales warranty. Whether you are a distributor, system integrator, or end-user, you will find the right RFID and related products here, ensuring that your company gains tangible benefits.
We have grown into a company with over 200 team members, including a production department, R&D center, sales department, technical support, and after-sales service. Understanding that time is of the essence, we can fulfill customized orders within just 5 days. Our dedicated team of over 100 factory staff ensures a stable supply and fast delivery for all our orders.
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