Mining intrinsically safe pull cord emergency stop combination loud speaker telephone

Abstract

1. The name of the design product: mine intrinsic safety pull rope emergency stop combination loudspeaker telephone. 2. The use of the design product: loudspeaker telephone used in coal mine communication control, which can realize high-definition voice communication in high-noise environment and complete voice alarm, data transmission and other functions. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

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