What is a defining characteristic of the Water Mist system?

The defining characteristic of the Water Mist system is that it utilizes high pressure fresh water, typically around 1,100 psi. This high-pressure approach allows the system to create fine mist particles that can effectively cool the fire and displace oxygen, which contributes to fire suppression. The small size of the water droplets enhances the surface area for heat absorption, making the system particularly effective in controlling fires without extensive water damage.

Other options, such as low pressure water for suppression, foam agents, or chemical activation systems, do not accurately describe the unique operation or functionality of a Water Mist system, which specifically stands out due to its use of high-pressure water for enhanced fire extinguishing capabilities.