neizam's device was triggered automatically in case of danger without human intervention.as filled with powder with a thermal sensor, which responded to fire. in belarus, the latest innovative developments in the field of fire fighting. deputy chief, pavel vladimirovich is our guest today, hello, we have already learned how humanity came to the modern fire extinguisher, now we want to know how many of these modern fire extinguishers, or rather, more correctly , types, exist today, what is in service, our industry today we are able to produce a wide range. extinguishers, they can be of various designs, both structurally and in principle and with different fire extinguishing agent, however, in firefighter practice, the most used are powder and carbon dioxide fire extinguishers. as for powder fire extinguishers, they effectively extinguish fires of solid, liquid and gaseous substances, so in principle electrical installations are under voltage, the second most common fire extinguisher is carbon dioxide, that is, powder, as i understand it, there is some kind of powder inside.