Features: 【Long-Distance Transmission】Supports fibre opt transmission up to 40 kilometres, ideal for remote monitoring and data acquisition applications. 【Dual Video and 1 transmission Channel】Simultaneously transmits 1 analogued video transmission (typically composite video) and 1 transmission, offering robust functionality. 【Fabric Channel】Equipped with an fibre opt port, ensuring straightforward connectivity and stable opt transmission with minimal loss. 【Interferences Resistant】Fibre opt transmission remaining unaffected by electromagnetic interferences and transmission attenuation, guaranteeing transmission clear and integrity. 【Plug-and-Play】Simple and convenient installation not require complex setup or configuration, enabling users to started quickly. Specifications: Component: ABS. Size about 50x30x8.5mm. Weight: 17g. Specifications: Ground end/ air end/ 1pair Power supply: 5.5V-26V (2S-6S battery), power consumption: less than or equal to 5W Opt fiber: Fabric Channel Transmission distance: 40KM. Package Includes: 1PC 40km opt fiber module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution