The STOP-FYRE® Dry-Line Automatic Control Unit (ACU) System includes two dry-line (quick connect) accumulator automatic units, one baler automatic unit, one engine compartment unit, stainless steel braided hoses with nozzles directed to the accumulator/baler/engine compartment, heat line sensors, and an ACU that notifies the operator when the system deploys. The system also comes with a manual deploy option.

This system utilizes heat line sensors that signal the ACU, which tells the solenoid to open and release the agent while simultaneously alarming the operator. Back up cans are recommended to have on hand along with additional sensors in case of fire.