I, along with others mentioned that the Holy Stone RID was available from Amazon at a very good price. Of course it's for use with their drones, but has a selection for "Other Aircraft". You enter the name (Phantom 4 Pro) and it's weight 1388 g. It seems to save it, then you restart the module. With my Iphone or Android tablet the Drone Go2 app can't find the module. To erase the data and start over, I've noticed the weight field is always blank, every other field is how I entered it. Holy Stone people are working on this now. Question: Have anyone used the Holy Stone RID successfully with a DJI Drone? Thanks!!