Phantom 4 RTK SDK Controller There are three main features to this new controller - Ocusync . Long range and; reliable transmission . DJI Mobile SDK Compatibility . Leverage developer tools . Access to 3rd Party Apps . Maximise your drones capability To harness the full power of the Phantom 4 RTK you can now connect a compatible Android or iOS device to the RC and install any compatible DJI Mobile SDK-enabled app. While developers have the ability to create their own custom apps through DJI Mobile SDK operators can leverage these developer tools to optimise aircraft capability for surveying missions and other data acquisition scenarios.In addition to providing access to the world's largest app ecosystem the SDK remote controller comes fully equipped with all the signature technologies that DJI users have come to know and expect like DJI OcuSync a transmission system that provides users with reliable HD image and video transmission at distances of up to 7 km.Surveyors and enterprises that are seeking new and efficient tools to help optimise their workflows can look toward the DJI Phantom 4 RTK offering real-time centimetre-level positioning data to produce survey-grade results. If you already own a Phantom 4 RTK you can still purchase this SDK Controller!. .