BSC-DH/AVA explosion-proof sound and light alarm is suitable for hazardous areas with explosive gas environments. Adopting aluminum alloy shell, with strength, corrosion resistance, and impact resistance; Featuring brightness and volume, long lifespan, and maintenance free features; Multiple electrical interfaces such as M20, 1/2 "NPT, 3/4" NPT, etc. are available for easy connection to different devices, achieving sound and light alarm functions in hazardous situations. It can be connected to the Kelkang gas detector to achieve gas detection sound and light alarm function.