What does "fire line" on the fire alarm display mean?
Multi line is no signal line control, generally speaking, such as fire pumps, spray pumps, fans, fire elevators. It's directly started.
It means the line, directly from the controller to the front of the equipment, direct control, which is equivalent to the start of the line
Multi line is probably said that a number of communications bus, or a number of communications lines, and now seems to fire only the linkage disk, multi line.
