Dahua VTK-VTO2010D VTH2020DW 4-Wire Best Intercom KIT

* The parameters and datasheets below can only be applied to ME1809-S2 series.Intelligent Voice Alarm function which can be used with Scheduled AI of AI XVR is only available for TiOC 2.0 camera. * In order to use the Smart Dual Light HDCVI camera, the firmware of XVR must be upgraded to V4.001.0000004.1.R.220323 or later version. > Max 15 fps@4K. > 120 dB true WDR, 3D NR. > Smart Dual Light. > Protection Against Red-Blue Light Interference (Only 4K). > Active deterrence with red blue light, siren and alarm out interface. > 40 m illumination distance. > Super Adapt. > Built-in mic. > 3.6 mm fixed lens (2.8 mm optional). > CVI/CVBS/AHD/TVI switchable. > IP67, 12 VDC.