The LF-AV-6125 Audible and Visual Alarm indicator adopts a built-in integrated circuit, a piezoelectric sounder and a flasher which when combined, produces a high energy conversion efficiency for effective output of light and sound while utilizing minimum amount of power. It is also directly connected to the detection loop of the Fire Panel to effectively monitor the device for faults or control for alarm m activation. It has a built-in input and output circuitry specially designed for audible and visual alarm indication. The Fire Alarm Controller can be programmed to selectively activate individual audio-visual indicators as deemed necessary .It also adopts pre-emptive alarm technology which organizes the data received from the audio-visual indicator. The inform motion with the highest priority would transfer first. Other collected data shall be transmitted to the device based on its priority status which ensures the rapid response of the system. The indicators design widely applies to all kinds of industrial and commercial construction with its high resistance to humidity, wide operating temperature range, high reliability and ease of installation and configuration.