Product Introduction:
The T5577 Key Fob is an intelligent product specifically designed for low-frequency RFID (Radio Frequency Identification) applications, operating at a frequency of 125kHz. It incorporates traditional RFID chip technology into a portable key fob form factor, blending convenience with a lightweight and stylish design, and is widely used in access control, attendance tracking, identity verification, parking management, membership management, and other fields.
This product utilizes the T5577 chip, which offers high stability and rewritability, while also supporting various protocols and custom requirements. The combination of an exquisite appearance and superior performance makes it an ideal choice for modern management.
Product Features and Usage:
1. Core Functions:
– Identity Verification:
– Quickly read user identities in access control systems to achieve seamless entry and exit.
– Data Storage and Modification:
– The T5577 chip supports rewrite capabilities, allowing for multiple changes to stored data as needed.
– Strong Compatibility:
– Compatible with a variety of 125kHz frequency readers, suitable for various application scenarios such as hotel room cards, corporate access cards, etc.
– Data Security:
– Equipped with a unique serial number to prevent data replication and unauthorized intrusion.
2. Usage Method:
– Initializing and Writing Data:
– Utilize a compatible RFID reader/writer to input the required data into the key fob chip.
– Formatting and settings can be done through specialized software.– Reading in Application Scenarios:
– Proximity the key fob to an RFID reader (recognition distance within 5cm), and the system will automatically read the information.
– Data Updating:
– If there is a need to change the data stored in the key fob, it can be overwritten using an RFID reader/writer.
– Utilize a compatible RFID reader/writer to input the required data into the key fob chip.
– Formatting and settings can be done through specialized software.– Reading in Application Scenarios:
– Proximity the key fob to an RFID reader (recognition distance within 5cm), and the system will automatically read the information.
– Data Updating:
– If there is a need to change the data stored in the key fob, it can be overwritten using an RFID reader/writer.
Customization Services:
1. Aesthetic Customization
– Color Options: A variety of colors (blue, red, black, yellow, etc.) are available, and dual-color designs are supported upon request.
– Logo Customization: Company logos, QR codes, serial numbers, etc., can be laser engraved or screen printed.
– Shape Customization: In addition to standard key fob shapes, we can design specific shapes based on your requirements, such as animals or brand logos.
2. Chip Parameter Customization
– We offer pre-writing services for user area data (e.g., access control card numbers, membership IDs).
– Support for chip initialization settings, including encrypted data and storage formats.
3. Packaging Services
– Both individual and bulk packaging can be customized, with the option to include instruction manuals or promotional materials.
– We provide eco-friendly packaging options that meet green environmental standards.
4. System Integration Services
– For corporate clients, we offer system integration support to ensure that the key fobs can be seamlessly integrated into existing access control, attendance, or membership management systems.
– We provide technical support and development documentation to help clients quickly complete secondary development.
Product Advantages:
Portability and Durability
The key fob design is lightweight and compact, easy to carry, with a wear-resistant casing for durability.
High Cost-Performance Ratio
The T5577 chip offers stable performance, and our product is priced affordably, making it the best choice for large-scale applications.
Versatility in Various Scenarios
It can be widely applied in various settings such as corporate offices, smart communities, schools, gyms, and more.
Eco-Friendly Materials
Made from non-toxic and harmless materials, our products comply with international environmental protection standards.
Product Working Principle:
Chip Features
The T5577 is a programmable low-frequency (125kHz) RFID chip that supports multiple protocol simulations, including EM4100 and EM4200, and is widely used in access control, attendance tracking, identity verification, and other fields. The chip has an internal EEPROM memory area that allows for data encryption or modification through an RFID reader/writer.
Signal Transmission
During operation, the RFID reader/writer emits electromagnetic waves at 125kHz.
The antenna in the T5577 key fob receives the electromagnetic waves and powers the chip (passive powering method).
The chip responds to the received instructions by modulating the data (using ASK or FSK, for example) and returning it to the reader/writer.
Data Storage and Communication
The T5577 chip’s memory is divided into multiple storage areas, each capable of holding different user data.
Wireless communication between the reader/writer and the key fob allows for reading, writing, or erasing data.
Usage Scenarios
When a user brings the key fob close to an RFID device, the device reads the chip information from the key fob (such as user ID).
After comparing the data, the device decides to execute the corresponding action (such as opening a door, checking in, etc.).
Product Parameters:
| Product name | T5577 Key Fob |
| Size | 40*32mm |
| Chip | TK4100 |
| Frequency | 125Khz |
| Protocol | ISO7814/5 |
| Working life | 100,000 times |
| Working temperature | -20℃~70℃ |
| Working model | Passive no battery |
| Readding distance | 2~5cm |
| Memory | 363 bits |
| Package | 100pcs/bag 2000pcs/ctn |
| Carton size | 38*20*28cm |
| GW | 12KG |
How to Use T5577 Key Fob: Read ID card/keyfob (TK4100/EM4100,etc.) Write ID can be copied to the card/keyfob (T5577/EM4305 etc.)
Note:
Provide free samples: All products in our store are 100% real shooting,
Factory direct sales, quality guaranteed. If you are concerned about the quality of our products,
If there are concerns about color difference, size, etc., we can provide free sample service, and customers only need to pay for the freight.



