254-ECM97422-RO,麦克风 OMNIDIRECT 9.7x6.5mm
254-ECM9744-RO,麦克风 OMNIDIRECT 9.7x4.5mm
254-ECM9751-RO,麦克风 NOISE CANC 9.7x5mm
254-ECM97-RO,麦克风 9.7 x 5.0mm
254-EMB1005-RO,扬声器与变频器 9.6 x 7mm 3100Hz
254-EMB1051-RO,扬声器与变频器 9.7 x 9.7 x 5.0mm 2700Hz
254-EMB105-RO,音频指示器及警报器 9.6 x 5.0mm 2500Hz
254-EMB11-RO,扬声器与变频器 9.6 x 5.0mm 2731Hz
