MiFare 125kHz Classic Blank RFID Card Key Tag

The MiFare 125kHz Classic Blank RFID Card Key Tag is a reliable, durable, and fully reprogrammable smart card designed for a wide range of access control, attendance, and identification applications. Compact and lightweight, this RFID key tag provides secure data storage and convenient contactless operation — making it ideal for replacing lost or damaged cards without requiring re-enrollment in the system.

Key Features

• Reprogrammable for multiple uses — easily modify or update stored data
• Portable and compact design for everyday use
• Quick replacement solution for lost or old RFID cards
• Compatible with standard M1 1K and MF1ICS50 card readers
• Durable PVC/PET construction ensures long-lasting performance

UID Card Structure

• Contains 16 sectors, each with 4 blocks of 16 bytes
• Programmable UID (Unique Identifier) — can clone or replace existing cards
• Easy to program using a standard M1 reader; no special tools required
• Default password: FFFFFFFFFFFF (12 F)
• Manufacturer’s block (Sector 0, Block 0) is fully modifiable

Specifications

• Card Type: Contactless smart RFID card
• Operating Frequency: 125 kHz
• Read/Write Method: Non-contact IC communication
• Communication Speed: 106 kbit/s
• Reading/Writing Distance: 2.5 – 10 cm
• Response Time: 1–2 ms
• Storage Capacity: 8 Kbit (16 sectors × 4 blocks × 16 bytes)
• Data Retention: Over 10 years
• Erase Cycles: Over 100,000 write cycles
• Working Temperature: -20°C to +85°C
• Chip Type: MF1ICS50
• Security: Three-pass mutual authentication (ISO/IEC DIS 9798-2)
• Data Integrity: 16-bit CRC, parity, bit coding, and counting
• Keys: Two unique keys per sector for secure multi-application use
• Material: PVC / PET
• Color: White
• Standards: ISO 14443, ISO 10536
• Dimensions: Standard ISO10536 credit card size

Common Applications

• Access control systems for offices, buildings, and elevators
• Attendance and time-tracking solutions
• Parking and toll management
• Membership and loyalty cards
• Public transport fare collection and campus ID cards
• Water meter prepaid systems and community management

This high-quality MiFare 125kHz RFID smart card ensures dependable performance for secure access, attendance tracking, and identification systems. Its reprogrammable design, long data retention, and high read-write reliability make it an excellent choice for both commercial and personal use.

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