4-MP 1/2.8" CMOS image sensor, low luminance, and high definition image. Outputs max. 4 MP (2560 × 1440)@25/30 fps. H.265 codec, high compression rate, ultra-low bit rate. Built-in IR LED, and the max. illumination distance is 20 m. ROI, SMART H.264+/H.265+, flexible coding, applicable to various bandwidth and storage environments. WDR, 3D NR, HLC, BLC, digital watermarking, applicable to various monitoring scenes. Intelligent monitoring: Intrusion, tripwire, fast moving (the three functions support the classification and accurate detection of vehicle and human); abandoned object, missing object, loitering detection, people gathering, parking detection, face detection, people counting, in Area No. and queue management. Abnormality detection: Motion detection, video tampering, scene changing, audio detection, no SD card, SD card full, SD card error, network disconnection, IP conflict, illegal access, and voltage detection. Alarm: 2 in, 2 out; audio: 2 in, 1 out; 485, BNC, supports max. 512 G Micro SD card; built in MIC and speaker. 12 VDC/PoE power supply, 12 VDC power output, and max. current 165mA, easy for installation. IP67and IK10 protection. Supports altitude Self-adaptive, which adapts the altitude and angle of installation to improve the detection effect of people counting under ceiling mount.