Item Type: Video Doorbell_x000D_ Model: W3_x000D_ Material: ABS_x000D_ Sensor: 1080P COMS sensor_x000D_ Lens: 6G wide angle 2.2mm lens. _x000D_ Angle of View: 120 horizontal, 150 diagonal . _x000D_ Video Stream: Main stream 1280 x 720, 15fps. Sub stream 640 x 360, 15fps. _x000D_ CMOS: Supports automatic white balance, automatic gain control, and automatic backlight compensation. _x000D_ System: For Lite OS. _x000D_ Standby Time: About 6 months. 10 wakeups per day, 30 seconds per session. _x000D_ Day Night Conversion: Automatic switching of dual filters. _x000D_ Infrared Distance: 850nm infrared, with limited distance of 5m. _x000D_ Network Configuration: QR code distribution network, sound wave, WiFi fast connection. _x000D_ PIR Detection: Supports PIR detection wake up. _x000D_ Audio Coding Standards: AAC and G.726. _x000D_ Audio Input and Output: -38dB microphone, built in speaker. _x000D_ Recording: Automatic recording, event recording. _x000D_ WIFI: 2.4GHz_x000D_ Network Protocols: TCP/IP, HTTP, TCP, UDP, SMTP, DHCP, DNS, PDP. _x000D_ Wireless: WIFI082.11b/g/n wireless network. _x000D_ Passive Infrared Detection: Supporting_x000D_ Adaptive Bit Rate: Supporting_x000D_ 2 Way Audio: Supporting_x000D_ Sleep Time: Adjustable for 15s, 30s, 60s. _x000D_ Voice Call: Supporting_x000D_ Remote Wake Up: Supporting_x000D_ PIR Wake Up: Supporting_x000D_ Mobile APP: For Ubox, for IOS 11.0, for Android 6.0 or above. _x000D_ Storage: Memory card, shipped without memory card. _x000D_ Power Supply: 2 x built in 3.7V lithium battery with 4400mAh capacity.