1.RF remote control with one button 2.chip:fixed/learning/rolling code; 3,Frequency: 315MHz/ ... other industral control . They are sold to Europe ,South America ,Japan and other world market..... Characteristics:1.Various crust for your choice2 ... used for home/store anit-theft alarm,electric cars,,motorcycles, automobile ,car alarms,all kind of doors/windows controllers and other industrial control ...