Kai button at the hand pump is a fire alarm signal back to the joint controller, and then confirmed by the controller to start the fire pumps, fire pump is not directly activated.

• 而手报按钮启泵是将火灾信号反馈到报警联动控制器，经确认后再由控制器启动消防水泵，并不是直接启动消防水泵。