This mine explosion-proof and intrinsically safe type acousto-optic signal switch is applicable to the signal contact of belt transport and winch transport incoal mines containing with explosive gas. It facilitates production, save labor, increase the safety ND reliability of underground operations and improves economic efficiency, having great pomotion prospects and values. Such combination signal switch is much more advanced than the original bell one and other signal ones from domestic and overseas manufacturers.

Product Features
It is light, combining with several functions such as little button, explosion-proof lights, explosion-proof electric bell, three wiring etc. The original explosion-proof lights are replaced by high-brightness light-emitting diodes, unique and visual; The original bell is replaced by the current high-frequency horn, high-sound frequency, distant transmission. The explosion-proof cavity of the switch as seperate connecting cavity with four outlets. The overall structure is simple and reasonable.