ERASABLE Copy Card

• Frequency: 125kHz; Chip: T5577 (compatible with other 125kHz universal tags); Sensing distance: 2.5 to 10 centimeters (1 to 4 inches); Data storage lifespan: 10 years.
• Writable and rewritable. It can be erased and written 100000 times.
• Important reminder: These are blank labels without pre programmed card numbers. You cannot directly add them to the RFID lock, nor can you use a card reader to read them. Before use, you must first write data (card number) into it through a 125KHZ RFID card reader. Please read carefully before purchasing.
• Shell material: PVC plastic. Waterproof and durable. Size: Approximately credit card.

The T5577 125kHz RFID card you mentioned is commonly used for access control systems, like electric door locks. It’s a versatile, writable card that can be programmed with unique identifiers, making it a good choice for various security applications.

Here’s a bit more detail about the T5577 card:

• Frequency: 125kHz; Chip: T5577 (compatible with other 125kHz universal tags); Sensing distance: 2.5 to 10 centimeters (1 to 4 inches); 

• Data storage lifespan: 10 years.

• Writable and rewritable. It can be erased and written 100000 times.

• Writable: Can be written with new data, which allows you to customize the ID.

• Compatibility: Often used with proximity readers and systems that support 125kHz RFID technology.

• Applications: Commonly used in electronic door locks, security systems, and access control applications.

If you’re using this card for a specific project or system, make sure that the reader/writer you’re using is compatible with the T5577 technology.