125KHz RFID Card Reader Module (JT308)

Overview

The 125kHz RFID Card Reader Module (JT308) is a compact, low-frequency RFID reader designed to bring reliable contactless identification to access control, security systems, attendance tracking, and inventory management. Built for easy integration and dependable operation, the JT308 is ideal for both prototype projects and production environments.

Key Features and Specifications

Core Features

• 125kHz frequency range for broad compatibility with standard LF RFID cards and tags.
• Plug-and-play design with simple wiring for quick installation.
• Compatible with microcontrollers such as Arduino, making it suitable for DIY and embedded projects.
• Compact, durable module that fits into constrained spaces and provides long-term reliability.
• Supports efficient, real-time data transmission for access events and inventory updates.

Why These Features Matter

• Low-frequency (125kHz) operation ensures compatibility with many legacy RFID cards used in access control and attendance systems.
• Easy integration reduces development time and costs for system integrators and hobbyists.
• Durability and compact size make the JT308 suitable for door readers, kiosks, and embedded smart devices.

Applications

• Access Control Systems: Use JT308 for door locks, gates, turnstiles, and secure entry systems for offices, buildings, and residential projects.
• Inventory and Asset Management: Tag equipment and stock with RFID cards for faster, contactless identification and tracking.
• Attendance Systems: Implement quick and reliable check-in/check-out for schools, offices, and events.
• Smart Home Solutions: Integrate with smart locks and home automation systems to control access and add convenience.
• Public Access Management: Deploy in libraries, museums, and event venues for controlled or paid entry.

Benefits

• Reliable Performance: Stable 125kHz operation delivers consistent reads for secure applications.
• Easy Integration: Works with common microcontrollers, lowering the barrier for developers.
• Cost-Effective: Provides a budget-friendly way to add RFID identification to projects and businesses.
• High Compatibility: Supports a wide range of LF RFID cards and tags for flexible deployments.
• Secure and Convenient: Contactless operation reduces wear and provides safer access management.

Installation and Integration

Quick Setup Steps

1. Connect the JT308 module to your microcontroller (for example, Arduino) following the module’s wiring diagram.
2. Power up the module and test with a compatible 125kHz RFID card or tag.
3. Read and process the card ID in your controller firmware to control access, log events, or trigger actions.
4. Adjust reader placement and power settings for optimal read reliability in your application.

Integration Tips

• Use debounce logic in firmware to avoid duplicate reads when a card is held close to the reader.
• Keep wiring short and provide stable power to prevent read errors in noisy environments.
• Combine the JT308 with secure backend systems or databases to manage user credentials and audit logs.

Technical Notes and Compatibility

The JT308 operates at 125kHz and is compatible with common LF RFID cards and tags. It is designed for straightforward interfacing with microcontrollers and control systems. For best performance, match the module placement to your physical access points and ensure firmware handles card IDs securely.

Why Choose the JT308

If you need a dependable, affordable 125kHz RFID card reader for access control, inventory tracking, attendance, or smart home projects, the JT308 delivers reliable reads, easy integration, and compact durability. It is a practical choice for DIY developers, system integrators, and businesses looking for an effective RFID solution.

Note: Images are for illustration purposes only.