What is the auxiliary tool for Ark to evolve Niu Niu?

This is a transmitter. According to the query "The Evolution of the Ark: Survival and Evolution", official website showed that the Niu Niu auxiliary tool of the evolution of the Ark is a transmission tool, which can bring dragons or objects to the platform below the Ark. Ark: Survival and evolution is a survival game published by Wildcard Studio.