QD119 aluminum alloy explosion-proof type sound and light alarm is our company according to the latest electronic products technology, designed for gas detectors and other equipment with sound and light alarm function, This product adopts special core electronic integrated circuit, stable operation, long service life; the top is equipped with ultra bright LED light-emitting diode, multi angle is clearly visible, can alert staff to take measures immediately to avoid accidents; Aluminum Alloy explosion-proof shell, durable, waterproof, shock resistance, corrosion resistance. The product has the advantages of small volume, light weight, convenient installation, etc. which is the best choice for the gas detector and other safety alarm devices.