2.5x the Clarity: The built-in Sony 2K sensor and professional-grade lens allow you to view activity in picture-perfect resolution. See visitors in sharp detail as they approach your door. Dual Power Options: Half a year of coverage from one charge or non-stop power supply via a wired connection. Expanded Field of View: The increased 4:3 Aspect Ratio ensures you get a head-to-toe view of anyone who approaches and gives you the perfect viewing angle every time. HomeBase 2 Required: The eufy Security Wireless Add-on Video Doorbell requires a HomeBase 2 to operate. Please note, the doorbell alone will not work The private low-power wireless connection between the Doorbell and Homebase reduces standby power consumption by 58% Military-grade AES-256 data encryption ensures your footage is kept private on transmission and storage The on-device AI instantly analyses each event and accurately determines whether or not a human is present. This ensures only relevant alerts are sent and that you are notified in real-time Draw an Activity Zone to customize the area in which motion is detected. Exclude busy pedestrian areas or roads to reduce the number of false alerts you receive Connect your Doorbell to Google Voice Assistant or Amazon Alexa and check in anytime on what's happening outside your home Speak directly to anyone who approaches your front door via two-way audio. Tell your friends to come round the back or that you have just run out to get some milk Record and set up to 3 instant responses. When you are notified of activity simply select one of you pre-recorded responses to interact and give instructions Connectivity: WiFiImage Sensor: 2KAngle of View: 160 °