A flow switch is an instrument that detects the signal of water in a tube.

A flow switch is an instrument that detects the signal of water in a tube. Flow switches are automatic devices used to manage the flow of air, steam, or liquid. The flow switch work as a device transfer a trip signal through to another device in the structure called a pump. The flow Switch is a mechanical-to-electrical Fire Alarm input device, and it tells the fire alarm system that water flows in the sprinkler system.

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