Two-Way Audio: The doorbell camera features a built-in microphone and speaker system, enabling high-definition two-way conversations anytime. When someone presses the doorbell, the app will send a notification. Clicking 'Open' allows you to make a video call with visitors outside. Never miss a visitor, whether you're home or away. HD View: The doorbell camera features a built-in microphone and speaker, enabling two-way communication and real-time video with noise reduction and monitoring. Adaptive technology ensures clear real-time communication with visitors via your smartphone, anytime. Includes 38 doorbell chimes; customize to your preference. 2.4 GHz Wi-Fi Compatible: The video doorbell's 2.4 GHz Wi-Fi range reaches up to 20m (66ft). It easily connects to your home Wi-Fi network and streams live video to your phone. Conveniently view and speak with visitors from your bed, work, or vacation. Note: This doorbell is currently not compatible with 5G Wi-Fi. Smart and Portable: The doorbell is app-controlled, with an automatic operating mode, making it smart and portable. Its compact size and weight make it convenient to install and remove. Night Vision: Advanced night vision with an 850nm infrared fill light extends the field of view up to 4 feet in total darkness without light pollution. Day and night vision automatically adjusts based on light changes. The wireless design eliminates cable hassles; easily mount anywhere. Simple installation in minutes using double-sided tape (attached to the backplate mount) directly to the wall/door.