Parts and accessories for multi-rotor drones, namely, LED lighting systems, LED electric distribution boards, Electric buzzers; Parts and accessories for multi-rotor drones, namely, Electrical power distribution units, power distribution boards, voltage regulators, Printed circuit boards (PCBs), monochrome on-screen display (OSD) generator, Electronic transmitters and receivers for audio and video signals, and electronic flight controllers in the nature of a microprocessor for controlling drones