... quality 433 MHZ antenna 2.wireless transmitter and receiver 3.Impedance :50 V.VSWR ;1.5 ... it is widely used for wireless data transmitter&wireless receiver .such as wireless phone ,WLAN .features:Frequency ... factory buy all kinds of machince, produce and supply all component including cable,PU cover,metal ... factory buy all kinds of machince, produce and supply all component including cable,PU cover,metal ...