25-Pack 125kHz RFID T5577 Rewritable Clamshell Proximity Cards
25-Pack 125kHz RFID T5577 Rewritable Clamshell Proximity Cards
25-Pack 125kHz RFID T5577 Rewritable Clamshell Proximity Cards
Upgrade your access control setup with this convenient 25-piece pack of 125kHz RFID T5577 rewritable clamshell cards. Built on the versatile T5577 chip, these thick PVC proximity cards can be written and rewritten multiple times — making them ideal for businesses, schools, hotels, and facilities that need flexible, cost-effective credential management.
Why Choose T5577 Rewritable RFID Cards?
- Rewritable & Cloneable: The T5577 chip supports multiple read/write cycles, allowing you to clone existing 125kHz credentials or program new ones as your needs change.
- Broad Compatibility: Operates at 125kHz — compatible with most standard low-frequency RFID readers, keypads, and access control systems including EM4100/4102 emulation modes.
- Thick Clamshell Design: The durable, thick PVC clamshell housing protects the internal antenna and chip from everyday wear, bending, and impact — far more rugged than standard credit-card-thin formats.
- Stable Performance: Normal mode compatible with E5550/E5551 and expanded mode operation ensures reliable read range and consistent performance across a wide range of readers.
- Versatile Applications: Perfect for access control attendance, hotel door locks, staff check-in systems, school campus entry, membership management, parking lot entry, and more.
- Value Pack: 25 cards per lot — stock up for your entire facility or resell individually.
Specifications
| Chip | T5577 |
| Operating Frequency | 125kHz |
| Material | PVC |
| Color | White |
| Format | Thick Clamshell Proximity Card |
| Quantity | 25 cards per pack |
| Country of Origin | Made in Mainland China |
Common Applications
- Office & building access control systems
- Hotel room door locks
- Employee & staff attendance tracking
- School and campus entry management
- Membership and loyalty card programs
- Parking lot entry and payment systems
- Security and identification systems
Package Includes
25 × 125kHz RFID T5577 Rewritable Thick Clamshell Proximity Cards
For general guidance on RFID and electronic security standards, visit the NIST Guidelines for Securing RFID Systems.
Frequently Asked Questions
Q: What RFID readers are compatible with the T5577 125kHz clamshell card?
A: The T5577 chip is compatible with most standard 125kHz low-frequency RFID readers and access control keypads, including those that support EM4100, EM4102, and similar formats. It also supports normal mode compatibility with E5550/E5551 readers, making it widely usable across common commercial and residential access control systems.
Q: Can I rewrite or reprogram these cards multiple times?
A: Yes. The T5577 chip is fully rewritable, allowing you to erase and reprogram the card data multiple times using a compatible RFID writer/programmer. This makes these cards highly flexible for environments where credentials need to be updated, reassigned, or cloned from existing 125kHz cards.
Q: Why choose the thick clamshell format over a standard thin card?
A: The thick clamshell housing provides significantly greater durability than standard thin PVC cards. The rigid outer shell protects the internal antenna coil and T5577 chip from bending, cracking, and physical damage during daily use, extending the lifespan of each card in high-traffic environments.
Q: How many cards come in this pack?
A: Each order includes 25 individual 125kHz RFID T5577 rewritable thick clamshell proximity cards — ideal for outfitting a small office, hotel floor, or reselling individually.