Use the WIFI Doorbell (TZ-IP02) to answer outside visitors anytime, anywhere. Whether you are in the room or kitchen or on the other side of the world, you can watch the video at home and have a conversation at any time.WIFI Doorbell (TZ-IP02) The doorbell with removable battery pack is safe and convenient for the next generation and can be used in any home.FeaturesLow power smart video doorbellSupport PIR motion detectionSupport 2.4G Wi-Fi connectionSupport mobile phone & button & PIR detection wake upHigh Quality two-way talk voice with noise cancellationDay and night mode automatic switchingImage adjustment:automatic white balance, Back light compensationLens: Infrared LED: 6 IR LEDs, Night visibility up to 15 metersSystem: Android 2.2 above versions IOS system iphone, AndroidIntroduction of Appearance