FreeSpeak II 2.4 GHz active transceiver: Active transceiver powered either locally or from the matrix CAT5 connection. One transceiver supports up to four FreeSpeak II beltpacks. More transceivers needed if roaming or more beltpack support is required. Includes AC PSU adapter part 453G023-3. FCC approved for use in the USA and Canada and available for worldwide sales except EU countries.