The DJI iOSD Mini On Screen Display is specially designed for a DJI autopilot system and it should be used with either WooKong-M, Naza-M or Naza-M V2. It can transmit video and iOSD information in real-time, which will help you to obtain the aircraft status information during first-person view (FPV) flights. The iOSD Mini can display multiple flight information specs including power voltage, flight velocity, height, distance from the home point, horizontal attitude, GPS satellite number and more. The iOSD will even superpose this data onto the video, so the iOSD data is clearly visible. Conveniently, the iOSD Mini is compatible with both NTSC and PAL video source inputs. You can also use an R/C transmitter switch to remotely select which video source input you want to use. The R/C TX switch will change the wireless video transmitter channel remotely as long as you"re using a video transmitter specified by DJI. Accurate Real-Time Flight Data & Video Signal Superposition The iOSD Mini can collect real-time video and flight data, which will provide you with the aircraft"s status information during flight. It can display power voltage, flight velocity, height, distance from the home point, horizontal attitude, GPS satellite number and more. Double Video Source Inputs Are Switchable During Flight The iOSD Mini supports both NTSC and PAL video input sources. It automatically recognizes which source you"re using and you can also select which input source you want remotely using an R/C transmitter switch. By doing this, the pilot can achieve double video alternation during flight and can also set one video input source for the aerial camera and the other one for FPV. This will ensure that the nose direction of the aircraft is under control and that your aircraft will safely return after filming sessions.