Fangrui Product Details High-performance 500mhz Wireless Analog Video Receiver, Designed For Fpv Drones And Other Remote Applications Provides Clear And Stable Mission, With A Mission Distance Of Up To 40 Km In Los Air-to-ground Settings, And 2-3km In Open Areas Of Cities Made Of Aluminum Alloy, It Also Has A High-speed Fan, Which Is More Conducive To Heat Dissipation And More Suitable For Long-term Work The Signal Input Adopts A Universal Av Interface, Which Can Be Easily Compatible With All Conventional Av Interfaces Such As Cameras, Vcds, Dvds, Etc Not Only A Professional Wireless Cctv Receiver For Cctv Security Projects, It Can Also Be Used For Audio And Video Mission Of Fpv Systems, Drones, Model Aircraft/helicopters, Unmanned Equipment Vehicles, Etc Working Voltage: Dc12v Working Current: 250ma Mitting Frequency: 500mhz Sensitivity: -85dbm Number Of Channels: 8chs Frequency: 460mhz, 490mhz, 500mhz, 520mhz, 540mhz, 560mhz, 580mhz, 600mhz Audio Input/audio Modulation: 1vp-p (fm) Video Input/video Modulation: 1vp-p (fm)