BAL1-127G mine flameproof sound and light combination of bell 
 Scope of application: 
 BAL1-127G mine flameproof combination of sound and light bells (hereinafter referred to as the combination of bell) suitable for coal mine methane or coal dust explosion hazard in place sound or light signals express or telematics warning signal. 
 Model meanings: 

 Technical parameters: 
 1, the implementation of the standards: GB 3836.1-2000, GB 3836.2-2000, the MT 428-1995; proof mark: Exd Ⅰ; 3, rated voltage: 36,127 V AC / 50Hz; Rated Current: 0.35A; audio Radius: 150m; optical signal visible distance: 30m; cable diameter Φ: 14 ~ 22mm. 
 Product Features: 
 1, shell and cover made of iron of high quality cast iron, the two plane explosion-proof surface by a bolt fasteners, surface high pressure electrostatic spray; 2, the transparent cover to increase the protection net to protect the transparent cover is not easy to break; signal expression of the speaker sound, light bulb display; 4 speakers> 85dB of sound signals and visible within 30 meters of optical signal through the light bulb.