Voice alarm (intrinsically safe type for mining)

Abstract

1. The name of this design product: Voice alarm (intrinsically safe for mining). 2. Purpose of the product with this appearance design: It is used for voice prompts and early warnings of faults when starting and operating AC variable frequency electric traction coal mining machines in mines. It can also be used for teaching mines, simulation test laboratories and on-site joint debugging and electronic control tests of excavation faces. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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