Sorry if this is has been answered already but is it possible to control the DJI FPV drone with any other controllers?  Would love to get a controller that would work with Air Unit based drones but also capable of flying the DJI drone.  

Hello there. Good day and thank you for reaching out. The DJI FPV ( https://www.dji.com/dji-fpv?site=brandsite&from=nav ) is only compatible with the DJI FPV Remote Controller 2 ( https://store.dji.com/product/dji-fpv-remote-controller-2 ). Just a reminder that DJI does not recommend you to use 3rd party accessories like remote controllers when flying your DJI FPV. These 3rd party remote controllers might affect the DJI drone when in use. There is a possibility that these 3rd party remote controller will be able work. However, since it's not tested by DJI we cannot guaranteed the stability of the said 3rd party accessories if it will work all the time with no issues and might void the warranty of your DJI FPV. Thank you.