>>When connect with hikvision NVR, only have 1-way audio for microphone function, speaker function can't use. Search Tool ：SADP (HIKVISION), AjDevTools. 🔹 Two-Way audio: Built-in microphone and speaker（⭐ when connect to Hikvision NVR，the speaker function will not work but the microphone function can work normally ）.
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