manual pull station造句

Notifier offers a complete line of fire alarm peripheral devices, such as smoke detectors, heat detectors, manual pull stations, gas detectors, and notification appliances.
Operation-Activation of a fire alarm initiating device, or a manual pull station, signals the fire alarm panel, which in turn signals the deluge valve to open, allowing water to enter the piping system.
It's difficult to find manual pull station in a sentence. 用manual pull station造句挺难的