How do you connect the fire alarm to a few wires?
The working voltage of the fire alarm is DC24V, and the fire alarm action is controlled by the input output module. The connection between the alarm bells is connected in parallel, and the terminals of each alarm bell are only two, all of which are easy to follow. As shown in the following figure, Z1 and Z2 are bus signal source terminals, and D1 and D2 are 24V power line terminals. The line is connected to the fire alarm through the fire control module.
The fire control module can provide a set of dry contacts, and the 24V power supply can be connected on the dry contact so as to control the sound of the alarm.
The fire alarm has only two terminals and only two lines, so it is only two lines from the bus signal source to the fire alarm.
