125KHz Low Frequency RFID Reader
125kHz Desktop RFID Reader for Close-Range Identification
A low frequency RFID reader reads compatible passive LF RFID tags, cards, and key fobs at short range.
This product is a 125khz RFID reader in a compact desktop format for local tag reading, credential enrollment, and system testing.
It should be selected according to tag chip, output interface, read distance, software format, and installation environment.
Key Features
- Desktop Reading Format
Designed for workstation use, card enrollment, tag testing, and local data capture. - Multiple Interface Options
USB, RS232, RS485, and Wiegand 26 options support different PC, controller, and access-system connections. - Controlled Close-Range Scanning
Short read distance helps operators scan one credential at a time during registration or verification.
Technical Specifications
| Feature | Specification |
| Product Type | Low frequency RFID reader / desktop RFID reader |
| Frequency | 125 kHz LF |
| Supported Tag Type | Passive 125 kHz RFID tags, cards, and key fobs |
| Compatible Chips | TK4100, EM4200, EM4305, T5577, subject to format compatibility |
| Read Range | Up to 10 cm, depending on tag, reader output, and environment |
| Interfaces | USB, RS232, RS485, Wiegand 26 |
| Power Supply | 5V DC, 100mA |
| Dimensions | 104 × 68 × 10 mm |
| Installation | Desktop |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -25°C to +75°C |
| Compliance | CE / FCC, certificate scope should be confirmed before regulated projects |
A 125khz RFID reader is not automatically compatible with 13.56 MHz NFC, MIFARE, HF, UHF, or 134.2 kHz animal-identification tags.
Typical Applications
- Access Card Enrollment
Used to read 125 kHz access cards or key fobs during user registration, card replacement, or credential testing. - Time Attendance Systems
Used with attendance software when employee RFID credentials need to be read at a desktop workstation or terminal. - Locker and Cabinet Systems
Used in locker, cabinet, vending, or storage systems where a short-range LF credential confirms user identity. - Membership and Visitor Identification
Used by gyms, clubs, campuses, clinics, or service counters that issue 125 kHz cards or key fobs. - RFID Tag Testing
Used by system integrators to check whether a 125 kHz tag, coin tag, or writable credential can be read before deployment.
Which 125kHz Tags Can This Reader Read?
| Tag or Chip Type | Typical Use | Compatibility Note |
| TK4100 | Read-only access cards and key fobs | Common for fixed ID systems |
| EM4200 | Read-only LF identification | Reader output format should match software |
| EM4305 | Programmable LF applications | Requires compatible encoding workflow |
| T5577 | Writable or configurable LF credentials | Reader and data format must be confirmed |
| 134.2 kHz animal tags | Livestock or pet identification | Not supported unless the reader is designed for that frequency and protocol |
Frequency alone is not enough. The reader must support the chip type, modulation, data format, and output mode required by the target system.
Desktop RFID Reader vs Door Access Reader
| Comparison Point | Desktop RFID Reader | Door Access Reader |
| Main Position | Workstation or counter | Door, gate, or wall-mounted access point |
| Main Purpose | Enrollment, testing, local reading | Entry control and permission checking |
| User Interaction | Operator presents tag to reader | User presents credential at entry point |
| Common Interface | USB, RS232, RS485, Wiegand | Wiegand, RS485, TCP/IP, or controller wiring |
| Best Fit | Registration desk, software testing, card issuing | Permanent access-control installation |
Choose a desktop RFID reader when tags need to be read at a PC, service counter, registration desk, or test bench.
Choose a door access reader when the reader must be mounted at an entrance and connected to an access controller.
Typical Application Case: Access Credential Enrollment
An access-control administrator can use a 125kHz desktop RFID reader to enroll staff cards or key fobs into management software.
The operator places the credential near the reader.
The reader outputs the tag ID through the selected interface, such as USB, RS232, RS485, or Wiegand.
The software then links the ID to a user record, permission group, or access profile.
Before deployment, sample credentials should be tested with the reader, software, output format, and controller workflow.
Need a Desktop RFID Reader That Matches Your 125kHz Tags?
Send one working tag sample, the required output interface, and the software or controller format before production.
JIA RFID can check whether the reader output matches your tag chip, data format, and system connection.
Sample testing is recommended when replacing an existing reader or integrating with current software.
Frequently Asked Question
The top questions about low frequency RFID reader
A low frequency RFID reader is a reader designed for short-range identification with compatible LF RFID tags, cards, or key fobs.
No. NFC normally operates at 13.56 MHz. A 125khz RFID reader is designed for LF RFID credentials and cannot read NFC tags unless a separate NFC reader is used.
Only if the animal tag frequency and protocol are supported. Many animal-identification systems use 134.2 kHz ISO 11784/11785 tags, so compatibility must be confirmed before use.
Read range depends on tag chip, tag antenna size, reader output, tag orientation, surrounding materials, electrical noise, and software response time.
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.
RFID Vehicle Tags
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
RFID tags for supply chain visibility track products, showing when a box, pallet, or container moves from one facility to another.
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
Our factory supplies custom RFID tags and OEM hardware solutions for unique needs when standard RFID products aren't available.
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
We provide rugged industrial RFID tags and readers for demanding applications. Our tags withstand all weather conditions.
Animal RFID Tags
RFID tags track animals and pets using ear tags or injectable ampoules. Ear tags can be custom-printed and come in various colors.
RFID Asset Tracking
RFID tags for asset tracking, like file servers, rental equipment, streamline inventory, asset management, enabling quick location, tracking.
Consumables RFID Tags
RFID counterfeit tags on consumables, with a reader in the machine, verify authenticity and prevent counterfeit use.
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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