How do you get the fire alarm, button DC24V, alarm 220V?
On the handle of the normally open output as a switch, the hand press press, the switch is closed.
Manual is equivalent to a switch, the use of hand reported switch signal output. The normally open two terminal of the handle is connected to the work line of the alarm 220V power supply, the hand newspaper is pressed, and the 220V loop is formed to alarm the alarm bell.
