T5577 Key Fob
Material: ABS
Product name: T5577 Key Fob
Frequency: 125kHz
Size: 40×32mm
Product Introduction
The T5577 Key Fob is a rewritable 125kHz low-frequency RFID keychain tag, widely used for duplicating and cloning existing 125kHz proximity cards (such as EM4100, HID Prox, etc.). Made from durable ABS material, it is waterproof, shock-resistant, and ideal for access control systems where cards need to be copied or rewritten multiple times. This passive tag requires no battery and can be programmed using compatible RFID writers/duplicators.
Key Features
- Rewritable & Clonable: Supports unlimited read/write cycles, perfect for duplicating EM4100, TK4100, HID 125kHz cards, and other compatible IDs.
- High Compatibility: Works with most 125kHz RFID readers and duplicators (e.g., handheld copiers).
- Durable Construction: IP67 waterproof, epoxy-filled option available for extra protection.
- Full Customization: Custom shapes, colors (blue, red, black, yellow, etc.), logo printing, laser engraving/serial numbering.
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | T5577 Key Fob |
| Chip | ATA5577 / T5577 (compatible EM4305) |
| Operating Frequency | 125 kHz (LF - Low Frequency) |
| Protocol Standard | Compatible with EM4100/TK4100 formats |
| Memory Capacity | 330 bits (26 pages, 363 bits total) |
| Read/Write | Yes, rewritable (up to 100,000 cycles) |
| UID | Rewritable |
| Data Retention | 10 years |
| Write Endurance | 100,000 cycles |
| Read/Write Distance | 2-10 cm (reader dependent) |
| Anti-Collision | No (single tag operation typical) |
| Dimensions | 40 × 32 × 4.5 mm (customizable) |
| Material | ABS Plastic (PVC, Leather, Silicone options) |
| Weight | 5-7g |
| Operating Temperature | -10°C to +50°C |
| IP Rating | IP67 (Waterproof) |
T5577 vs Other RFID Chips
| Feature | T5577 (125kHz) | EM4100 (125kHz) | MIFARE Classic 1K (13.56MHz) | HID Prox (125kHz) |
|---|---|---|---|---|
| Frequency | 125 kHz | 125 kHz | 13.56 MHz | 125 kHz |
| Memory | 330 bits | 64 bits | 1024 bytes | Varies |
| Read/Write | Yes (Rewritable) | Read-only | Yes | Read-only |
| Encryption | None | None | CRYPTO1 | Proprietary |
| Clonable/Duplicate | Yes (Easy) | Yes (with T5577) | Limited (cracked) | Difficult |
| Cost Level | Low | Very Low | Medium | Medium |
| Best For | Card Duplication, Access Control | Basic ID | Multi-Application | Secure Access |
Why Choose T5577 Key Fob?
The T5577 is the go-to choice for low-frequency RFID duplication due to its rewritable nature, allowing users to clone existing 125kHz cards quickly and cost-effectively. It provides excellent compatibility with legacy access systems while offering customization for branding and durability in daily use.
Industry Applications
- Access Control Systems Door entry, gate control, property management – ideal for duplicating community or office proximity cards.
- Time & Attendance Employee check-in systems using cloned staff IDs.
- Parking Management Vehicle barriers and gated parking lots.
- Fitness & Leisure Gym lockers, swimming pools, saunas – waterproof design ensures reliability in wet environments.
- Identification & Logistics Personnel tagging, asset tracking, and simple membership systems.
Packaging & Shipping
- 100 pcs/bag
- 2,000 pcs/carton
- Carton size: 38×20×28 cm
- Gross weight: Approx. 12 kg
FAQ
Q: What is the T5577 chip used for?
A: Primarily for cloning/copying 125kHz read-only tags like EM4100.
Q: How to program a T5577 key fob?
A: Use a 125kHz RFID writer/duplicator (e.g., handheld cloner).
Q: Is it compatible with all 125kHz readers?
A: Yes, after writing compatible ID format.
Q: Can the ID be changed multiple times?
A: Yes, unlimited rewrites.
Q: What is the MOQ?
A: Usually 100 pcs, free samples available for testing.
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