SM16A1 Audio Details Technical Specifications Handheld Microphone (IP54)IP54 complaint handheld microphone with 10-pin aviation connector to be used with mobile radios.Find a dealerHighlightsFunctionsAccessories for SM16A1 Included as standard with SM16A1Systems that work with SM16A1Technical SpecificationsMicrophone sensitivity -21dB ±3dB @1KHz, impedance ≤ 2.2KΩ, PTT cycles ≥100000, operating temperature -30°C to +65°CRelated Products RD985S (100W) RD985 RD985S MD785