seityvity(1khz,0db=1v/pa) -4 6 ±3 db -44 ±3 db -42 ±3 db -40 ±3 db -38 ±3 db -36 ±3 db -34 ±3 db -32 ±3 db speccificatio lmpedance: less than 2.2k ω directivity: omnidire ctional frequency: 20-16,000hz standard operation voltage: 4.5v current coumption: max 0.5ma seitivity reduction: within 3db at2.0v s/n ratio: more than 58db 本产品的加工定制是是，品牌是仁福/rf，型号是rf-mp9767-2c，种类是传声器(咪头)，类型是驻极体传声器，材质是铝壳，规格尺寸是9.7*6.7（mm），声道数是单声道，灵敏度是-38db，频率响应是50-16000hz，输出阻抗是2.2k