Keyfob rigid drop-shaped usable as Keyfob and object identification. Fully customizable front and back with offset printing, numbering and barcodes. Glass effect finish with extremely elegant epoxy resin. Particularly suitable for opening and checking rooms, hotels, hostels and resorts. T5557 RFID chip read and write LF 125 KHz ISO 11784 ISO 11785 memory 363 bit original Atmel.
APPLICATIONS - Personal identification - Electronic money - Holiday parks - Campsites - Access control - Vending - Energy saving switches
The T5557 is a contactless R/W IDentification IC (IDIC) for applications in the
125 kHz frequency range. A single coil, connected to the chip, serves as the IC’s
power supply and bi-directional communication interface. The antenna and chip
together form a transponder or tag.
The on-chip 330-bit EEPROM (10 blocks, 33 bits each) can be read and written blockwise from a reader. Block 0 is reserved for setting the operation modes of the T5557
tag. Block 7 may contain a password to prevent unauthorized writing.