The explosion-proof sound and light alarm BBJ IIB IIC dust aluminum alloy shell is made of cast aluminum alloy die-casting, with a sturdy structure and surface spray treatment. The lampshade is made of new tempered glass, which has high strength and good impact resistance. The warning light has four colors to choose from: red, yellow, blue, and green. The warning light source adopts a new 6-watt LED light emitting tube, which has the advantages of long service life and maintenance free. There are three installation methods for the entire lamp: seat type, ceiling type, and suspension rod type, and steel pipes or cables can be used for wiring. The thread at the inlet is 3/4, and the outer diameter of the cable is 10-14mm< Explosion proof sound and light alarm BBJ IIB IIC dust aluminum alloy explosion-proof alarm is a type of alarm signal device used in hazardous areas or potentially hazardous areas, which sends warning signals to people through sound and various lights and does not ignite flammable and explosive gases. C: Our company guarantees the quality of this product: replacement for any quality issues within one year, and warranty for quality issues within three years. D: According to its different power, this model can be divided into three types, namely: Type A: working voltage can be DC12/24 or AC110/220 volts, power is 10W, flash frequency is 60 times/min, sound intensity is greater than or equal to 75 decibels, protection level is IP54, explosion-proof mark is ExdIIBT6. Base diameter (circular) 16cm, height 20cm Type B: working voltage can be DC12/24 or AC110/220 volts, power 30W, flash frequency 60 times/min, sound intensity greater than or equal to 110 decibels, protection level IP54, explosion-proof mark ExdIIBT6C: working voltage can be DC12/24 or AC110/220 volts, power 20W, no flash, sound intensity greater than or equal to 110 decibels, protection level IP54, explosion-proof mark ExdIIBT6. (Note: Type A, B, and C can all be upgraded to a protection level of IP65, with an explosion-proof mark of ExdIICT6. Users need to specify or specify this when placing an order;); Incandescent lamps can also be used as light sources, but they are not recommended