Features: 1PIR motion detection and infrared night visual function, if someone is standing outside the door, the wireless doorbell will take a picture of the guest and send you a message, and the infrared light will automatically turn on at night. 2You can talk to visitors anytime and anywhere, through noise reduction and rate adaptation technology, you can transmit video or voice more clearly. 3Fit for iOS and fit for Android system. Support Wi?Fi connection, even when connected outdoors, the transmission is still reliable and the signal is strong. 4Made of high?quality ABS material, durable in use and has a long service life. A good home decoration. 5Small and portable, concise and stylish appearance. Home necessity, it can improve the quality of your life. Condition: 100% Brand New Item Type: Intercom Visual Doorbell Material: ABS Product Size: Approx. 153 x 65 x 30mm / 6 x 2.6 x 1.2in Weight: Approx. 317g / 11.2oz Power Supply Mode: 2 x 18650 Battery 2600MAH, Household Electricity Step-down 5V-8V (Batteries Not Included) Main Control Chip: For Huawei HiSilicon Hi3518EV200 Lens: Full 4G Ultra Wide-angle 1.7mm Lens Video Stream: Transmit 1920 x 1080 / 15fps 1280 x 720 / 30fps 640 x 360 / 30fps 1280 x 720 / 30fps CMOS Performance: Support automatic white balance, automatic gain control, automatic backlight compensation Standby Time: About 6 months (Wake up 10 times a day, 30s each time) Day and Night Conversion: Automatic switching of dual filters Infrared Distance: 850nm Infrared, Effective Distance: Approx. 5m / 16.4ft Net Configuration Mode: One-button WIFI Configuration Sound Waves Configuration Audio Coding Standards: AAC and G.726 Audio Input / Output: -38dB Microphone / Built-in 1 Speaker Recording Mode: Manual Recording, Alarm Recording Memory: 8-32G Memory Card (Not Included) Net Protocol: TCP / IP, HTTP, TCP, UDP, SMTP, DHCP, DNS, P2P Wireless: WIFI802.11b / g / n Wireless Net Two-way Intercom: Support full duplex real-time call Panoramic Display Mode: 3D Simulation and Automatic Cruise Sleeping Time: 15s Voice Phone Call: Support Remote Wakeup: Support PIR Wake up: Support Mobile Client: Fit for ANYHOME, for iOS10.0, for Android5.0 and above Working Temperature: -20- 70 Working Humidity: 80%RH Package Included: 1 x Doorbell (Batteries Not Included)1 x USB Cable1 Bag x Accessories (8Pcs)1 x Instructions