M200B WiFi Intligent Square Button Video DoorblSpecification: 1. The main control chip: Huawei HiSili Hi3518EV 200. 2. Lens: Full 3G1P super wide-angle lens. 3. Perspective: 100 degrees horizontal. 4. Video stream: 1280x720/30fps, 640x360/30fps. 5. CMOS performance: support automatic white , automatic gain control, automatic backlight compensation, digital wide dynamic. 6. System: OS. 7. Standby time: About 5-10 months (10 wakes per day for PIR, 15S each time). 8. Day and night conversion: Dual filters automatically switch. 9. Infrared distance: nm infrared, effective distance 5m. 10. Network configuration mode: One button WIFI configuration + sound wave configuration. 11. Audio coding standards: AAC and G. 726. 12. Frequency input / output: -38dB microphone / built-in 1 speaker. 13. Recording mode: Manual remote wake-up recording, PIR alarm recording. 14. WiFi: 2.4GHz. 15. Network protocol: TCP/IP, HTTP, TCP, UDP, SMTP, DHCP, DNS, P2P. 16. Pive Human Infrared Detection: Supported. 17. Adaptive Rate: Supported. 18. Two-way intercom: Support full-duplex real-time calls. 19. Sleep time: 30s. 20. Remote Wakeup: Support. 21. PIR wake-up: support high-medium-low sensitivity three wake-ups. 22. Cloud Storage: Optional 7-day loop for permanent cloud storage. 23. Mobile client: Ubl, iOS 10.0, Android 5.0 and above. 24. Operating temperature: -10-50 degrees Csius. 25. Operating humidity: Less than or equal to 80% RH.