






Any questions? Our AI beta will help you find out quickly.
Specification of T5577 RFID rewritable 125khz writable Keyfobs:
Blue T5577 RFID keychains+white T5577 Proximity Cards
Material: ABS casing + Copper Coil
Frequency: 125kHz
Chip: Original ATMEL T5577 (The best rewritable chip)
Working Mode: Read-write modes - Can be used in 125KHz RFID card Copier/ Duplicator
Storage Capacity: 330 bit (264 free bit availability)
Reading Distance: 2.5 - 6cm
Important Note:
1. These are blank key fobs and cards without pre-programmed card numbers. You cannot directly add them to RFID locks or use a card reader to read them.
2. Before use, please write data(card numbers) into the keyfobs by a 125kHz RFID card writer firstly.
FAQ:
Question 1: Can I directly register these tags to my electronic lock?
Answer: No. These key tags are blank tags without pre-programmed card numbers. The electronic locks cannot write or program a blank tag. The electronic locks can read only. They read the card numbers from the programmed key fob and then verify it pass or not.
Question 2: Why I can't copy my old tags/cards to your tags by a card writer?
Answer: First, make sure that your card is the same RFID frequency of 125kHz. Not all RFID cards are 125kHz type. For example, the frequency of some popular key cards are 13.56MHz, which is also called NFC card or IC card. Cards of different frequencies are incompatible.