ACN-02 Audio Details Technical Specifications PTT and Microphone cable (for use with receive-only Earpiece)IP54 compliant, split design PTT and microphone controller can be used with several different earphones, supports VOX.Find a dealerHighlightsFunctionsTechnical SpecificationsMicrophone sensitivity -42dB ± 3dB @1KHz, impedance ≤ 2.2KΩ @1KHz, PTT Cycles PTT cycles ≥100000, operating temperature -20°C to +60°C, IP54Related Products pdc680 HP782 Two-Way Radio HP702 Two-Way Radio HP682 Two-Way Radio