If you want to detect Obstacles with your drones then the Benewake TF03 100M Long Distance Laser Lidar/Rangefinder is a quite good solution.No matter If you are a newbie, you can learn more things about this distance sensor. TF-Luna is a single-point ranging LiDAR, based on the TOF principle. With unique optical and electrical design, it can achieve stable, accurate, and highly sensitive range measurement. The product is built with algorithms adapted to various application environments and adopts multiple adjustable configurations and parameters so as to offer excellent distance measurement performances in complex application fields and scenarios.