B50 720P Smart WiFi Video Visual Doorbell, Support Phone Remote Monitoring & Night Vision & SD Card (White) 1. The main control chip: Hi3518EV200 2. Sensor parts: million HD COMS sensor 14 SC1245 3. Lens: Full 3G1P Ultra Wide Angle 1.7mm Lens 4. Angle of view: 170 degrees 5. Video stream transmission: 1280*72030fps 640*36030fps 1280*72030fps 6. CMOS performance: support auto white balance, auto gain control, auto backlight compensation 7. System: Lite OS 8. Standby time: about 6 months (10 wake-ups per day, 30s each time) 9. Day and night conversion: Dual filter automatically switch 10. Infrared distance: 850nm infrared with 5m effective distance 11. Network Configuration: one-button WiFi Configuration + Sonic Configuration 12. PIR human detection: support PIR detection and wake up 13. Audio: - Audio Coding Standard: AAC and G.726 - Audio InOut: -38dB Microphone a built-in speaker 14. Video ManagementVideo Recording: Manual Recording, Alarm Recording 15. Network: - WiFi: 2.4GHz - Network Protocol: TCPIP, HTTP, TCP, UDP, SMTP, DHCP, DNS, P2P - Wireless: WIFI802.11bgn 16. Alarm: passive human infrared detection 17. Function: - Adaptive Code Rate: support - Two-way intercom: support full-duplex real-time intercom - Panorama display mode: simulate 3D and auto cruise - Sleep time: 15s - Support voice phone call, remote wakeup, PIR wakeup - Mobile phone client: ANYHOME, for iOS 10.0 Android 5.0 or later 18. Power supply: ACDC 8-24V or 2 x 18650 batteries 2600mAh (not included)