RFID 125kHz R/O Card

RFID 125kHz R/O Card: Product Overview

The RFID 125kHz Read-Only (R/O) Card is a high-quality, contactless smart card engineered for secure identification, access control, and data verification. Unlike writable cards, the R/O card contains a pre-programmed, permanent 10-digit unique ID that cannot be altered, making it an ideal choice for environments where reliability and security are crucial.

This card operates entirely contactless, allowing it to be read without removing it from a wallet, badge holder, or pocket. The embedded chip receives power either from a miniature internal battery or directly from the reader’s radio frequency signal, ensuring consistent performance without the need for direct physical connection.

Key Features

• Frequency: 125kHz, compatible with standard EM4100 and EM4200 readers

• Card Type: Read-Only, non-rewritable

• Unique ID: 10-digit, pre-programmed serial number

• Material: Durable PVC with a glossy finish

• Dimensions: 85.6 × 54 × 0.8 mm

• Weight: 6 g

• Reading Range: 5–12 mm

• Operating Temperature: -25°C to +50°C

• Water-Resistant: Suitable for everyday use and outdoor environments

• Antenna Design: Circular, optimized for stable and consistent reading

Structure and Functionality

The R/O card consists of multiple compressed PVC layers, with the chip embedded in the inner layer. Since the memory is read-only, the card cannot store additional information after manufacturing. It is designed to transmit the unique ID to compatible readers efficiently and securely, from a short distance, usually up to 10 cm.

Applications

• Employee ID and security access cards

• Membership and loyalty cards

• Attendance tracking systems

• Secure facility entry and verification

• Customer identification for discounts or special access

Advantages

• Contactless Operation: Eliminates the need for physical insertion or swiping

• Permanent, Unique ID: Prevents duplication or unauthorized modification

• Durable and Reliable: Resistant to daily wear, water, and environmental stress

• Quick and Efficient: Speeds up access control and verification processes

Summary

The RFID 125kHz R/O card is a professional-grade, secure, and durable solution for organizations and businesses that require reliable identification and access control. Its contactless design, unique ID, and robust construction make it suitable for a wide range of applications, ensuring fast, safe, and hassle-free operation every time.