Fire hydrant button to open the pump line and feedback line from the fire engine or to pump control cabinet line?
The vertical line is connected to the normally open terminal of a fire pump control cabinet, and the pump bus is connected to the normally opened terminal of the control cabinet after the access module, and the feedback line is usually defined as a signal line.
The fire hydrant button according to the new regulations, six heart, two straight lines, two bus line from the pump, roots feedback line.
After the button is pressed, the normally open terminal closed, the fire pump starts, the feedback signal into the fire after the host, the signal is sent to the host by the fire hydrant button, so when the fire hydrant button action, inspection and so on is lit.
