BAL礦用(yong)(yong)隔(ge)爆(bao)型(xing)聲(sheng)光組合(he)電(dian)鈴(ling)由燈泡(pao)，音響，防爆(bao)殼體，彈(dan)簧，按鈕等(deng)組成，主要適用(yong)(yong)于(yu)礦井下，在各種信號系(xi)統中(zhong)，作為接受電(dian)氣(qi)信號的音響信號用(yong)(yong)，以表達注意或執行(xing)信號。也可用(yong)(yong)于(yu)有類似危險氣(qi)體的工(gong)業企業中(zhong)
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