信号扬声器:SPK,SPK-WS,SPK-WM,SPK-WA,SPK-WV,SN-1,SN,SN-WS,SN-WM,SN-WA,SN-WV,SRN,SRN-WM,SRN-WA,SRN-WS,SRN-WV,SEN15,SEN25,SEN15/25-WS,SEN15/25-WM,SEN15/25-WA,SEN15/25-WV,SM30,SM40,SM200,SM400系列;
十三、船用重负荷防爆型信号扬声器:SEHN25-WS,SEHN25-WM,SEHN25-WA,SEHN25-WV,SEHN50-WS,SEHN50-WM,SEHN50-WA,SEHN50-WV,SEWN30E-WS,SEHN30E-WP,SEWN30E-WM,SEWN30E-WA,SEWN30E-WV,SEWN30T-WS, SEWN30T-WM,SEWN30T-WA,SEWN30T-WV,SEWN30L-WS, SEWN30L-WM,SEWN30L-WA,SEWN30L-WV,SHDN30-WS,SHDN30-WP,SHDN30-WM,SHDN30-WA,SHDN30-WV,SEWN50E-WS,SEWN50E-WP,SEWN50E-WM,SEWN50E-WA,SEWN50E-WV,SEWN50T-WS,SEWN50T-W
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