This UAV loudspeaker supports real-time air-to-ground shouting, real-time recording and playback with unlimited recording time, and can play warning sounds and sirens. It supports TF cards up to 32GB. The standard version features 5km audio transmission, 1200g sky-end weight, 220*250*110mm speaker dimensions, and 120W power. It delivers 80-85 dB at 100m (max 150 dB) with 550m sound transmission, and operates on 12V-26V (3S-6S batteries) for reliable aerial broadcasting.

Mechanical winch has 10KG maximum payload and 25m rope length, battery powered by 22-56V with 0.1-0.6m/s retractable speed and mechanical release device with counterweight block. It supports standard SBUS control and optional remote control PWM RS232 RS422, with functions of automatic rope arrangement automatic unhooking limit stop touch bottom stop and fault alarm. RS232 RS422 enables real-time data display and custom setting for ground station development.