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                                        NH-900A降噪耳機

                                        Model:NH-900A降噪耳機


                                            1.耳罩式聽力防護耳機是為保護聽力而設計的頭戴式耳機

                                            2.該產品具有高性能的通話質量以及佩戴的舒適性和牢固

                                               性,可靠的環境適應性                                             

                                            3.可以應用于警察、礦山、狩獵等各種噪音環境比較惡劣之處

                                            4.SNR = 25 分貝



                                        技術規格

                                        電池:1.5V AAA×2節(右耳機兩節) ;

                                        定時工作:4H;

                                        低電壓報警:≤2.2V;

                                        低電壓關機:≤2.0V;

                                        受話器失真度:≤3%@1KHz;

                                        受話器阻抗:100歐姆 ;

                                        受話器頻率:20Hz ~ 20000Hz;

                                        受話器靈敏度:115±3dB;

                                        MIC阻抗:2.2K歐姆;

                                        MIC頻率:50Hz ~ 16000Hz;

                                        MIC靈敏度:36±2dB;

                                        SNR值:≥25dB;

                                        SNR:按照GJB 4286-2001檢測的單值降噪值;

                                        耳罩:硅膠耳套或皮套耳套


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