Wired fire alarm system is also called multi-line (system) fire automatic alarm system or fire alarm control panel. In addition to providing two power lines for each detector, an alarm signal line is also required. The power supply for the detector is provided by the alarm.
The signal lines of the detector are connected to the alarm display panel. Lamps, such as a fire alarm system produced by a Japanese company. The functions of such systems are generally based on alarms, supplemented by some simple linkage functions (also for multi-wire systems), such as driving alarm bells, etc., and their alarms detect peripherals. The device has no fault detection function, and will only respond to the failure of the power cord. Installing such a wired fire alarm system is relatively cumbersome, especially the workload of the correction line .
The multi-line wired fire alarm system means that there is an independent signal circuit between each detector (device) and the controller. The detectors (devices) are independent of each other, and all detection signals are input in parallel to the controller. Generally speaking, it is a point-to-point connection.