Mining explosion-proof and intrinsically safe voic

Mining explosion-proof and intrinsically safe voice Acousto-Optic signal device The device is applicable to the signal contact of belt transport and winches transport in coal mines containing explosive gases. It facilitates production and improves economic efficiency, having great popularization prospects and values. And it contains several functions of the old type, like dotting button, explosion-proof lights, explosion-proof bell, and three- way connection. Our Mining Integrated Protection Device are used worldwide in mining operations to keep people safe and mines open. Wantai's Vacuum Soft Starter, Vacuum Electromagnetic Starter are versatile, rugged, and reliable; have low power consumption; and are designed for harsh, remote locations or unsafe conditions not suitable for personnel. The internal wiring of this product adopts plug-in terminal type, which is easy to replace and easy to maintain carrier This product adopts frequency modulation dynamic which has strong anti-interference ability, and the transmission distance is far and clear The product adopts the modular structure and is sealed with epoxy resin. It is damp proof, shockproof and easy to maintain The speakers use high frequency and waterproof horn, with high audio frequency and long transmission distance Supply voltage: 127V Operating current: 0.2A Intrinsically safe parameters Operating voltage: DC9.1V Working current: ≤150mA Sound loudness: no less than 85dB

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