different type of fire extinguishers
Direct and Indirect Release Systems
A direct release device applies the fire suppression chemical directly to the fire via the burst Firetrace Detection Tubing. The suppression agent is delivered automatically and does not require any manual input. The suppression chemical is discharged through the discharge nozzles using the indirect release technique, saturating the covered area and extinguishing the fire quickly and effectively. Indirect releases can be activated manually, but they are also totally automatic.