SM24N1-Ex Audio Details Technical Specifications Remote Speaker Microphone with dual PTT ButtonRemote speaker microphone with dual PTT button for increased comfort and convenience. The remote speaker microphone is compatible with intrinsically safe Hytera radios and bone-conduction earpieces.Find a dealerHighlightsFunctionsTechnical SpecificationsMicrophone sensitivity -50dB ±4dB @1KHz, PTT cycles ≥100000, impedance 2.2KΩ speaker sensitivity 94dB ±3dB @1KHz, impedance 20Ω ±15% @1KHz, rated power 1W, maximum power 2WRelated Products PD792i-Ex