- Original T5577 Chip,it doesn’t have pre-programmed id number,so need to write the id on it before you read
- it’s rewritable chip,and it can write in 125khz id format and H ID WG 125khz format,Need to write by rfid writer
- Please note it can’t be read before you program the chip
- can write by 125KHz RFID writer/copier
- blue,black,yellow,red and Grey color available in stock