USB 1.1/2.0 interface No external power source needed Free writer program General description @ Support Tag: EM4205 / EM4305 / EM4469 / EM4569 @ ISO11784 / ISO11785 / ISO FDX-B @ USB 1.1/2.0 interface (virtual com port) @ No external power source needed @ Built-in bi-color LED and buzzer @ Built-in transceiver antenna @ Read/write distance: ear tag (3-5 cm) @ Free writer program @ Size: 110x80x25 mm EM4205/EM4305 - General description The EM4205/4305 is a CMOS integrated circuit intended for use in electronic Read/Write RF transponders. It is suitable for low cost solutions like animal tagging applications. The IC communication protocol is compatible with EM4469/4569 family. All EEPROM words can be write-protected by setting protection bits. The IC contains a factory programmed 32 bit UID number.