Loudspeaker for DJI Matrice M200 Series. Compatible with V1 or V2. Connects to the ship via the Skyport for simple integration with controls in the pilot app. Loudspeaker produces sounds at 130 decibels, so the range is about 1,000 feet at a flight elevation of 300 feet AGL. Learn more at: https://www.rmus.com/products/rmus-m300-m200-series-loudspeaker