1,user-friendly and conveniently 2,8 channels 3,power :12V 500mW 4,range:3km(maximum) RC302receiving frequency:2370-2510MHz; 8channels receiving sensitivity:-90dBm frequency control:built-in frequency and phase lock loop double lines AV output:analog AV signal outputantenna connector:SMA(Inside the needle) power supply voltage: 6.5-15V supply current: 100mA dimension: 61*52*13mm(aluminium alloy ...