2. The 15km transmission distance can only be obtained underneath the FCC standard when calculated in an out of doors ecosystem without the need of interference. The SRRC conventional is adopted in mainland China, and the furthest transmission length is eight km. Mavic 3M with RTK module for centimeter-degree positioning. https://m3mhomes.com/commercial/smart-world-one-dxp-street-sector-113-gurgaon/