[Intelligent and Portable] The doorbell can be controlled by APP, automatic work model, intelligent and portable. Portable in size and weight, convenient to install and remove. [Two-Way Audio] Doorbell camera has built-in microphone and speaker. The doorbell camera has a built-in microphone and speaker system, which provides two-way high-fidelity conversation all the time. When someone presses the doorbell, APP receive a notice. After clicking Open, it can have a video call with the visitors outside. No matter or outside, you not miss any visitors. [Night Vision] The night image is clearly displayed. Built-in high-power infrared night vision lamp, combined with ICR infrared wave chip, can automatically switch day/night mode. Wire-free design saves you from cable hassle, you can just mount it any spot you like. Take only a few minutes, then you can easily set the door camera up and mount it up at door. Use double-sided tape(attached to the back plate bracket) to directly stick to the