Video Surveillance System CCTV 2-Way Audio Recording

SPECIFICATIONS       Differences between the two cameras: I91DL-8MP and I91DD-12MP: ★ Built-in microphone for real-time audio security I91DH-8MP: ★ Provide real-time security via built-in two-way audio ★ Support flashing alarm & Audio alarm Difference model Lens Angle of View Pixel Audio Input Function I91DL 4MM Horizontal FOV 78°, vertical FOV 38°, diagonal FOV 96° 8MP Built-in Microphone, record with audio I91DH 4MM Horizontal FOV 78°, vertical FOV 38°, diagonal FOV 96° 8MP built-in two-way audio flashing alarm & Audio alarm I91DD 2.8MM Horizontal FOV 113°, vertical FOV 62°, diagonal FOV 134° 12MP Built-in Microphone, record with audio Camera: ★ 4K smart dual light bullet network camera ★ 4mm@F1.6 lens brings everything back to life ★ Efficient H.265+ compression technology ★ Motion detection 2.0 with human & Vehicle Detection ★ Clear day and night vision with 3D DNR and 120DB WDR ★ Support on-board storage up to 512 GB (SD card slot) ★ IP67 Dust and Waterproof Rating ★ Support PoE &DC12V NVR: · 8MP high definition Real-time live viewing · Live view, recording&playback up to 8 MP resolution · Up to 8 channel IP cameras can be connected with built-in PoE inputs · Advanced H.265+ Video Compression · Supports iPhone、iPad、Android mobile remote monitoring · Connectable to the third-party network cameras · HDMI Video output at up to 4K (4096 × 2160) resolution · Annke Vision for easy remote view · Support 4-ch Human and vehicle targets detection 4K image quality, output 16:9 picture 1/2.4" Progressive Scan BSI CMOS IMAGE SENSOR, outputs 3840*2160 high-definition image quality, and the 16:9 aspect ratio is better than the traditional 4:3, and is more suitable for mainstream monitor ratios; Smart dual light: When an unoccupied car is triggered: the infrared light lights up and the black and white picture appears. When triggered by someone's car: the infrared light turns off, the warm light turns on and turns into a color picture. After the trigger is completed, the warm light turns off, the infrared light turns on, and then switches to black and white. Three modes to choose from. Both infrared and white light fill lights can reach 30 meters. 4mm@F1.6 lens, ultra-low illumination, can still maintain color images in dark environments, and will only convert to black and white when it is lower than 0.005 Lux. horizontal FOV 78°, vertical FOV 38°, diagonal FOV 96° DORI D: 115 m, O: 45 m, R: 23 m, I: 11 m, faces can still be recognized clearly at 10 meters I91DL: I91DH: Built-in high-sensitivity pickup, supports environmental noise filtering, and can also record during video recording Motion detection 2.0 with people and vehicle detection