Wireless Connection: No need for complicated wiring; the doorbell connects wirelessly to your home network. Night Vision: The doorbell can capture clear footage even in low-light conditions with high-quality night vision technology. Two-Way Intercom: The doorbell has a built-in intercom system that allows you to communicate with visitors before opening the door. Voice Change: The doorbell has a voice change feature that allows you to customize the doorbell's greeting message. Video Call: Easy to deal with visiting guests, when someone press the doorbell, the doorbell will push the nitifications to the phone, the owner can enter the phone video conversation interface. Support 2.4GHz WIFI and APP connection, 480P high resolution, present you pictures and video. Two-Way Audio: With a built-in mic, you can see and talk to your visitor anytime and anywhere when pressing the Doorbell. Long Standby: Built-in high capacity battery, long standby, don't need to charge it frequently. The battery is rechargeable, when the battery is no power, can charge it again and again. Portable Installation: Can be pasted and perforated. Support adhesive backing doesn't need punch holes, while support hole punch installation. No plugging, convenient, and hassle-free. Capture picture: Storage to the cloud, security protection drip. When a visitor presses the doorbell, it can capture the visitor's picture and save the record to the cloud, so the phone app can view past pictures at any time, which is safer and more secure. Night Vision: Build in the IR LED light, the picture is clear during the day and at night. Also, you can automatically switch to night mode from day mode after the ambient light drops to 2 Lux.