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Electrical Fire System (push button)
Electric systems are activated by pressing a strategically mounted momentary push button. Using a military specification actuator to detonate the extinguisher, the actuator extends a steel pin upon activation breaking a frangible seal in the neck of the cylinder and thus discharging the contents.
All electrical systems have their own independent power supply called a power pack that has facilities for checking the battery strength and circuit continuity as well as giving a visible indication that the system is armed.