SM26N2 Audio Details Technical Specifications Remote Speaker Microphone (with emergency button)IP54 compliant remote speaker microphone with emergency button and 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 HP782 Two-Way Radio HP702 Two-Way Radio HP682 Two-Way Radio HP602 Two-Way Radio