ZKTeco D0BPA Smart WiFi Video Door Bell The ZKTeco D0BPA is a 2MP wireless video doorbell with a chime for home security which always keeps an eye on your front door. No matter where you are, you can see visitors clearly. It comes with a 1/2.9″ CMOS image sensor and 2-megapixel resolution. It features night vision so you can view during the day or night, and greet via the mobile app smart. It also offers human detection so you get a notice when a human is detected and receive a call on your phone when your doorbell button is pressed. It comes with a built-in microphone and a speaker that enables two-way talk with audio. It is powered by a 4500mAh and it can offer 1-2 months of standby time. It comes with 802.11b/g/n 2.4GHz Wi-Fi. This smart doorbell supports cloud storage and also comes with 265GB of Local storage. In terms of security, it offers end-to-end encryption WEP/WPA/WPA2.