SM07R1 Audio Details Technical Specifications Portable Microphone With KeypadIP54 compliant portable microphone with keypad providing reliable communication required in harsh working environmentsFind a dealerHighlightsFunctionsTechnical SpecificationsMicrophone sensitivity -45dB ±3dB @1KHz, impedance ≤ 2.2KΩ, operating temperature -30°C to +60°CRelated Products TM-610 Analog Mobile Radio TM-600 Analog Mobile Radio