Easily communicate with large crowds and individuals in remote locations using the MP140 Digital Voice Broadcasting System for DJI Matrice 300/350 RTK from CZI. Whether communicating life-saving instructions during search and rescue missions or disseminating general information to large crowds at an event, the MP140 can do so effectively. The speaker can emit audio at up to 140 dB at an effective distance of up to 0.62 miles. Multiple broadcasting options are available to suit your needs, and the center of the loudspeaker features a built-in Full HD 1080p camera to help with two-way communications and see if your information was relayed successfully.