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4 MP 25X Powered by DarkFighter IR Acusense Network Speed Dome Hikvision DS-2DE4425IWG1-E HIK AI-ISP for excellent noise reduction effect High focus speed with self-learning focus technology keep the picture clear every single second High quality imaging with 4 MP resolution 1/2.8" progressive scan CMOS 25× optical zoom and 16× digital zoom provide close up views over expansive areas Focuses on human and vehicle targets classification based on deep learning Support face capture. Up to 5 faces captured at the same time Support link to Hikvision network speakers and network microphones to play audio Improve playback efficiency and be compatible with the AcuSeek and AcuSearch technologies of NVR for combined use Expansive night view with up to 100 m IR distance Active strobe light and audio alarm to warn intruders off Built-in arrayed dual-microphone for real-time high quality audio security