The circularly polarized RFID UHF antenna ST-ANT9 displays a gain of 9 dBi and a low standing wave ratio for optimal performance. Made of rugged IP66 technical plastic housing, it is water and dust resistant and can be used indoors or outdoors. The ST-ANT9 RFID UHF antenna can be used with ST-FX04 and ST-FX08 fixed readers as well as other readers for asset tracking, warehouse management, intelligent traffic management, vehicle tracking, production line management, intelligent measurement of weight, etc.