45AHD 4.5 inch Motion Detection Camera Video Smart Digital Door Viewer(Silver)

1. Image Sensor: 1/4 CMOS
2. Effective Pixels: 1920x1080
3. Minimum Illumination: 0.5 Lux/F1.6 Color
4. Signal-to-Noise Ratio: Greater than 50dB
5. Electronic Shutter: 1/4-1/10,000s
6. Focal Length: 2.4mm
7. Horizontal Angle of View: 140 degrees
8. Aperture: F2.0
9. Infrared Night Vision Lights: 4, 3mm, flat head, 90° angle, 850 infrared light
10. Supported Languages: Chinese, English, French, German, Spanish, Portuguese, Italian, Russian, Hebrew, etc. (Built-in languages may vary between versions; customizable languages available)
11. Recording Time: 10 seconds, 20 seconds, 30 seconds
12. Light Frequency: 50Hz/60Hz
13. LCD Resolution: 480x854
14. TF card: Supports up to 32GB (not included)
15. Video compression: H.264
16. Protection rating: IP55
17. Battery: 3.7V/3500mAh lithium battery
18. Wide dynamic range and low-light capabilities, with automatic color-to-black transitions
19. Utilizes a 32-bit processor and professional video codec chip
20. Infrared range of 1-2 meters, four 850 infrared LEDs, and PMW spectrometer technology
21. Built-in RTOS operating system, fully supports UI menu-based configuration and management
22. Supports video and photo modes for security purposes
23. Supports PIR motion detection and manual image capture
24. Integrated design, compact structure, and high reliability
25. Installs quickly and easily through a pre-installed peephole in the door
26. EEPROM data storage ensures data is not lost even after a power outage