10-Pack T5577 125kHz Writable RFID Proximity Cards EM4305/EM5200
10-Pack T5577 125kHz Writable RFID Proximity Cards EM4305/EM5200
10-Pack T5577 Clonable 125kHz RFID Proximity Cards
Upgrade your access control setup with this convenient 10-pack of T5577 chip RFID proximity cards. Compatible with EM4305 and EM5200 chip standards, these 125kHz cards are fully writable and rewritable — perfect for duplicating existing credentials or programming fresh ones for your security system. Each card ships with a key ring for easy carry. Made in China.
Key Features
- Universal 125kHz Compatibility: Works with the vast majority of 125kHz RFID readers and access control systems.
- Read & Write Unlimited Times: Rewrite data more than 100,000 times without degradation — ideal for testing, development, and everyday use.
- Dual Chip Support: Each card uses either the EM4305 or EM5200 chip (T5577 compatible); chips are assigned randomly per pack.
- Secure Memory: 330-bit memory with 10 partitions and an 8-digit password for added data protection.
- Durable ABS Construction: Waterproof, fade-resistant, and built to last. No external power required — passive RFID technology.
- Customizable Surface: Surface can be engraved, printed, or serialized with numbers and letters for easy identification.
- Key Ring Included: Each card comes with a key ring attachment for convenient daily carry.
- Wide Application Range: Suitable for office and building access control, hotel door locks, employee attendance systems, campus access, parking entry, and security management.
Specifications
| Chip Model | T5577 (EM4305 or EM5200 — sent randomly) |
| Working Frequency | 125kHz |
| Memory Capacity | 330 Bits, 10 Partitions, 8-digit Password |
| Read/Write Distance | 3–10 cm (1.18–3.94 in) |
| Rewrite Life | 100,000+ times |
| Material | ABS Plastic |
| Certification | CE |
| Quantity | 10 cards per pack |
| Country of Origin | Made in China |
Note: The chip variant (EM4305 or EM5200) is assigned randomly per order. Both chips are fully T5577 compatible and functionally equivalent for standard 125kHz RFID applications. Actual card color may vary slightly due to photography lighting conditions.
For general guidance on RFID and electronic security technologies, visit the NIST Guidelines for Securing RFID Systems.
Frequently Asked Questions
Q: Are these T5577 RFID cards compatible with my existing 125kHz access control system?
A: Yes — these cards operate at 125kHz and are compatible with the vast majority of standard 125kHz RFID readers and access control systems that support EM4100, EM4305, or T5577 format credentials. Always verify your reader's supported chip protocols before purchasing.
Q: Can I rewrite or reprogram these cards multiple times?
A: Absolutely. Each T5577/EM4305/EM5200 card supports more than 100,000 read/write cycles, making them ideal for repeated reprogramming, cloning, testing, and development purposes.
Q: What chip will I receive — EM4305 or EM5200?
A: Both chip types are fully compatible with the T5577 standard and interchangeable for most 125kHz applications. The specific chip variant is assigned randomly per pack, so you may receive EM4305, EM5200, or a mix of both across your 10 cards.
Q: Do these cards require a battery or external power source?
A: No. These are passive RFID proximity cards — they draw power wirelessly from the reader's RF field when in range (3–10 cm), so no battery or external power is ever needed.