Feature:   1. Phone Realtime Monitoring: Even if you are away from home, actively wake up monitoring anytime, anywhere, so that you will not miss any screen.     2. Human Body Induction: Abnormal reminder, 24 hours automatic detection of abnormalities, capture and video, and push abnormal messages to the mobile phone at the same time.     3. Infrared HD Night Vision: Using intelligent infrared recognition, will automatically switch the night vision mode when the light is insufficient, so that you can see the abnormalities outside the door at night.     4. Wide Angle: The 166‑degree super wide‑angle lens, double the field of view, the corners of the door/yard/corridor/aisle are clear at a glance, and the safety of the whole family is guarded.     5. Wireless Connection: Wi‑Fi wireless connection, no wiring, the doorbell is installed with a battery to connect to the Wi‑Fi, the signal is stable.     6. Two Way Intercom: Support two‑way voice calls, high‑definition video two‑way intercom, zero‑distance communication.             Specification:               Item Type: Video Doorbell  Material: ABS  Use: Household  Color: Golden  Plug Voltage: 90-260V  Battery: 2pcs 18650 battery (without battery)  Viewing Angle: 166 degrees  Signal to Noise Ratio: ≥39db  Infrared Light: 6pcs infrared light, night vision distance approx. 5-10m/ 16.4-32.81ft       WiFi: 2.4GHZ 802.11 b/g/n  Storage: Maximum support 32Gb memory card (card not included)  Audio: Two-way conversation  Motion Detection: Support  Dingdong Working Frequency: 433MHZ  Output Power: 0.15W  Standby Power: ≤10mW  Sensitivity: -112dbmm  Volume: Maximum 100dB  Use APP: For Ubox                               Package List:       1 x Doorbell       1 x Ding Dong       1 x Fixed Plate       5 x Screw       4 x Expansion Tube       1 x Small Hexagon Wrench       2 x Connecting Wire       2 x Manual       1 x Double-Sided Adhesive Sticker