W1 4.3 inch 1080P WiFi Smart Visual Electronic Doorbell Support PIR Motion Detection 1. 1080P COMS sensor, supporting automatic white balance, automatic gain control, and automatic backlight compensation 2. 4.3 inch IPS screen, 480x272 resolution 3. Automatic switching of day and night dual filters 4. Support PIR detection, two-way intercom, infrared night vision, and automatic photography 5. Main control chip: Junzheng T31 6. Lens: 4G wide angle 2.2mm 7. Battery capacity: 5000mAh (built-in) 8. Perspective: 167 degrees diagonal 138 degrees horizontal 9. Video stream: 1920x108015fps 10. Operating system: LiteOS 11. Standby time: About 6 months (10 wakeups per day, 30 seconds per session) 12. Infrared distance: 850nm infrared, effective distance of 5m 13. Wireless network: 2.4GHz WiFi 802.11bgn 14. Network protocols: TCPIP, HTTP, TCP, UDP, SMTP, DHCP, DNS, P2P 15. Mobile client: iOS 11.0, Android version 6.0 or higher 16. Supports up to 32G storage cards (not included) 17. Language: EnglishChinese 18. Installation: door thickness of 35-120mm, door hole diameter of 14-50mm 19. Packaging list: - Indoor host x1 - Outdoor sub unit x1 - Type-C charging cable x1 - Metal hanging plate x1 - Screw pack x1 - English guide x1