... IntroductionBAL-127(36)G Mining Explosion-proof Audio-light Combination Bell mainly is used under coal mine well with explosive gas ... It meets the standard of MT428bell>.Types and E-markTypeRated Voltage(V)Rated Current(A)BAL ... shell, junction box, cable inletting device, button, indication lamp, bell, alarming hammer ,electromagnet and others components.The connection of shell ...