SM26N4 Audio Details Technical Specifications Remote Speaker MicrophoneIP67 compliant remote speaker microphone with 2.5mm external audio connector.Find a dealerHighlightsFunctionsTechnical SpecificationsMicrophone sensitivity -42dB ±2dB @1KHz, PTT cycles ≥100000, speaker sensitivity 97dB ±3dB @300Hz to 3KHz average, impedance 20Ω ±15% @1.5KHz, rated power 2W, maximum power 3WRelated Products PD782i