H.D Payload release mechanism w/narro guard | Gimbal-Guard Team
Drone-Sky-Hook Single Release & Drop for DJI Phantom 3
Amazon.com: Release and Drop Professional Device for DJI Phantom 4 (all models) – Drone Fishing, Bait Release, Load Delivery, Search and Rescue and Fun – U.S. Patent - by DRONE SKY HOOK :
Gannet X - Electronic Payload Release For DJI Phantom 3 & 4 Drones – Drone Fishing - Gannet
Drone Search and Rescue supplies attachment (DJI Phantom 3) - Appropedia, the sustainability wiki