Crystal Display4.3 inch IPS screen, full viewing angle, clearer image, easy to install. Outdoor camera doorbell with built-in infrared sensor, powered by a monitor and featuring night vision. You can place it anywhere, just connect a socket for the screen.Visual IntercomTwo-way communication is possible between the monitor and the doorbell, and between the monitor and the monitor; Call forwarding is possible between all monitors. This model uses an advanced proprietary 2.4G protocol with a long transmission range to ensure your home is protected with a stronger, more reliable signal.100% WirelessIt is completely wireless, so no wires are needed. But keep in mind that the intercom works in two different ways. The outdoor unit is equipped with a lithium battery for a long standby time. It is also possible to plug the device into a power outlet, which means it is more powerful and works over a greater distance. The batteries for indoor units are the same as those for outdoor units.Seamless Communication: Enjoy seamless two-way video intercom with our doorbell. Not only can you see and talk to visitors at your door, but they can also communicate with you, creating a more interactive and immersive experience. The doorbell is designed with very low power consumption, ensuring a long standby time, so you won't have to worry about running out of battery life.Auto VideoIndoor Captain plug-in mode for quick response allows you to easily answer the door in any room in your home. If the memory function is enabled, visitor images are instantaneous to ensure you don't miss any visitors. Additionally, you can switch between six different Ding Dong music options based on your personal preferences.