Usayizi: 2.5×2.5cm Power supply: 4~5V@30mA Work frequency: 125KHz Support chip: EM4205, EM4305, EM4469 or compatible chip (default format Manchester code RF/64) Isixhumi esibonakalayo: serial port (TTL-232 format) R/W distance: <7cm Notice: I-JavaScript iyadingeka kulokhu okuqukethwe.