4 MP 32X Powered by DarkFighter IR Acusense Network Speed Dome 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 1/2.5" progressive scan CMOS 32× optical zoom and 16× digital zoom provide close up views over expansive areas Expansive night view with up to 200 m IR distance Built-in arrayed dual-microphone for real-time high quality audio security Focuses on human and vehicle targets classification based on deep learning 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 Audio visual alarm: The white flashing light and audible warning can be triggered by certain events