My best regards, I'm Silvano I'm Italian, I started four years ago with DIY drones with units Naza DJI. Now, for remotes use a drone 9 Kg. (not DJI) Approved Italian rules. I just bought a Phantom 4 for indoor applications. I am looking for directions and / or various problems for the use of this inside. if you have discussions link, please reported this to me. Ciao.