The Hikvision S50 + TK4100 is a smart dual-frequency proximity card developed for flexible access control deployments. It integrates two RFID technologies: MIFARE Classic 1K (13.56 MHz) and TK4100/EM (125 kHz), allowing the same card to work with different access control readers and systems.
The 13.56 MHz MIFARE S50 chip provides smart card functionality with memory storage and sector-based data management, while the 125 kHz TK4100 chip provides EM compatibility for standard proximity readers. This makes the card suitable for mixed environments where existing low-frequency and high-frequency access systems are used together.
The card uses a standard ISO card format similar to a bank card, with a slim PVC construction for easy carrying and identification. It is commonly used for door access control, employee identification, attendance systems, and security management applications.
Key Specifications
| Feature | Specification |
|---|---|
| Product Type | Dual-Frequency RFID Smart Card |
| RFID Technology | MIFARE S50 + TK4100 EM |
| Frequency | 13.56 MHz + 125 kHz |
| MIFARE Standard | ISO/IEC 14443 Type A |
| Memory Capacity | Up to 1 KB (MIFARE S50) |
| Card Function | Read / Write (MIFARE), Read Only (TK4100) |
| Communication | Contactless RFID |
| Card Material | PVC |
| Card Format | ISO Standard (Credit Card Size) |
| Dimensions | 85.5 × 54 × 0.8 mm |
| Weight | Approx. 5.6 g |
| Reading Distance | Up to approx. 10 cm (depending on reader) |
| Operating Temperature | -20°C to +75°C |
| Applications | Access Control, Time Attendance, Identification Systems |
Main Benefits
- Dual-frequency compatibility (125 kHz + 13.56 MHz)
- Works with different RFID access control platforms
- Slim ISO card design for easy carrying
- Contactless operation with no battery required
- Suitable for employee cards and access credentials
- Ideal for upgrading or integrating mixed RFID systems

