Optimal Compatibility: Designed specifically for radios, this 8 PIN plug speaker microphone ensures seamless connectivity with models TM-231 and TM-241, enhancing your communication experience. Design: Built to withstand rigorous use, this PTT mic is ideal for various environments, whether for professional or recreational purposes. Enhanced Audio Quality: Experience clear and reliable sound, which is crucial for effective communication in any setting. Easy to Use: The practical design features a push-to-talk button that provides quick and easy operation, making it user-friendly for all users. Related sites: nightclubs, bars, security, restaurants, hotels, airports,concerts,warehouses, and noisy environments. Impedance: 2.2ohm. Sensitivity:-36dB / - 2dB. Frequency response: 20Hz-1.6KHz. Applicable Models:TK Series: TM-231, TM-241, TM-731A, TM-631A, TM-201A, TM-401A, TM-201B, TM-401B, TM-211A, TM-411A, TM-221A, TM-321A, TM-421A, TM-521A, TM-231A, TM-331A, TM-431A, TM-531A, TM-241A, TM-441A, TM-541A, TM-701A, TM-721A, TM-621A, TM-2530A, TM-2550A, TM-2570A, -4100A, -4000A Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Colour:Black Material:ABS Package Contents: 1 x For speaker microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.