High-quality optical, simple and smart video door phone system. The mailbox with built-in video intercom can be connected to other IP cameras and DVR/NVR recorders. Via the monitor, app and software, you can see who is at the door or has already passed by, even if you are away from home, anywhere in the world. You can also interact with them, talking or opening the gate, as if you were at home. You can activate your burglar alarm or surveillance cameras.