Habot-mini is the world first mobile extinguisher that enables extinction by nitrogen. Water sprinkled to extinguish a fire in a datacenter, museum or library, has damaged valuable data or exhibits so far. In addition, it has been difficult to perform fire fighting at dangerous places which firefighters don’t have access to, such as nuclear facility with leaked radioactivity. To extinguish a fire, this machine reaches a fire point in a self-propelled manner with a good run-through performance, absorbs surrounding air, eliminates oxygen, generates and releases Nitrogen Enriched Air (NEA), which has a high nitrogen level, and decreases a spatial oxygen level to 12.5%. Using the air as an extinguishing agent, it maintains a low level of oxygen at the fire site and ensures unburnable space. It enables extinction at any facility where water cannot be used, at a large-scale disaster that makes it difficult to acquire water, or at any dangerous place to which firefighters have no access.