All automatic fire extinguishers (AYSS) are primarily divided into local and centralized systems. AYSS is then classified according to how it works - sprinkler and drainer type. According to the fire extinguisher rule - fire extinguisher is distinguished by the physical properties and chemical composition of the mixture.

Each AYSS must include an informational device that reacts to smoke, heat rise, and other signs of burning, a control signal registration, preparation, and transmission device, and an executive body that performs direct shutdown. Local systems combine all of this into a single unit that can be transported, installed, and serviced in full. The simplest and most reliable local system consists of a balloon with a fire extinguisher. The high pressure that is constantly present in this cylinder is maintained either by the chemical reaction process that goes away at the time of the violation of hermeticism or by the issuance of a control impulse.

In this system, the sprinkler itself is involved as a connector valve. These sprinklers contain a frequency element that runs between 40oC and 150oC degrees, depending on the maximum temperature that can occur in rooms without fire. As a general rule, such blocks are only a warning device to the fire alarm system