125KHz beschreibbaren umschreiben vides blanche T5577 Carte Clé RFID, Hôtel, Lot de 20

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 Blank White Card,Printable by Card Printer