What is an explosion-proof audio-visual alarm? Have you heard of it?

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An acoustic and optical alarm is a sound and light warning device installed on-site. When a fire breaks out at that location and is confirmed, the fire acoustic and optical alarm installed there can be activated by the fire alarm controller under fire control system, to emit strong sound and light signals in order to alert the people present. An explosion-proof audio-visual alarm (also known as an audio-visual warning device) is a type of alarm system used in hazardous areas to issue warning signals to people through sound and light; it does not cause ignition of flammable or explosive gases. The explosion-proof audio-visual alarm is suitable for installation in areas with explosive gas environments classified as Group II C, Temperature Class T6. It can also be used in explosion-proof zones 1 and 2 in industries such as petroleum and chemicals where explosion protection is required, and it can be used outdoors as well. +Explosion-proof audio-visual alarms can be widely used in petrochemical industries such as those involving oil, gas, chemicals, and oil depots, where toxic gases are present. They are used to detect leaks in hazardous areas both indoors and outdoors, and constitute an important instrument for ensuring production safety and personal safety. When toxic gases are present in the area being tested, the detector converts the gas signal into a voltage signal or current signal, which is then sent to the alarm instrument; this instrument displays the percentage concentration value of the lower explosive limit of the toxic gas. When the concentration of toxic gases exceeds the set alarm value, an audible and visual alarm is triggered to alert the duty personnel, who can then take timely safety measures to prevent fires or explosions. Advantages of explosion-proof audio-visual alarms: 1. Sound-emitting structure that allows sound to be emitted from multiple angles without any obstacles. 2. Pure stainless steel casing, with excellent corrosion resistance, suitable for various operating environments. 3. The lamp cap is made of polycarbonate, making it strong and durable. 4. The alarm is controlled by a 4-20mA current signal, reducing the requirements for detectors. 5. The built-in wireless module enables remote transmission of alarm messages.