125KHz T5577 RFID Keyfob are now adored by a number of people as they weigh light and are portable to bring it everywhere. It is becoming a fashion stuff these days and making our life more easier. As the technology is moving with a rocket speed and nothing is left untouched with the technical advancement so implies for the 125KHz T5577 RFID Keychain.

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 Please note it can’t be read before you program the chip can write by 125KHz RFID writer/copier