Inquisithor™ is an advanced industrial quadcopter drone designed for a wide range of applications, combining high payload capacity with a compact design. The drone features a transport compartment located at its centre of gravity. Several transport cartridges have been designed for this compartment, and they are available in various configurations depending on the type of material being transported. These cartridges also allow for the release of the transported material directly at the operator's command. With a payload capacity of up to 25 kg and a flight endurance of up to 45 minutes, the drone is an ideal solution for transporting materials, medical and rescue supplies, collecting data using multispectral and thermal cameras or analysing hazardous substances, drugs, explosives,, or radioactivity, using specialised detection devices. Folding arms ensure easy portability and space-saving storage. Inquisithor™ utilises a proprietary open control system that enables easy upgrades and customisation to meet specific user needs. Its advanced features include Ghost Mode, which allows autonomous target searching without data transmission, Loitering Mode for operations independent of GPS, and tactical equipment, including a release mechanism. Inquisithor™ is fully compatible with the MPU-5 system and made exclusively from European components, ensuring top-tier quality, reliability, and durability. A unique, sophisticated ground control station, specifically developed by ProLab Engineering for this device, can also operate the Inquisithor.