1,user-friendly and conveniently 2,8 channels 3,power :12V 500mW ... receiving sensitivity:-90dBm frequency control:built-in frequency and phase lock loop double lines AV output:analog ... transmitting distance:>4000metres frequency control:built-in frequency and phase lock loop AV input:analog AV signal ... toyswe supply 2.4g ,5.8g 1.2g 1.5g FPV products, with different transmitting power and channel,different ...