Aiphone KC-1GRD is a video entry security intercom that provides clear communication and enhanced security for your home or business. With its high-resolution color camera and built-in microphone and speaker, you can easily see and talk to visitors at your door from the comfort of your couch or desk. The system also features a door release function, allowing you to unlock the door remotely for authorized guests. Installation is simple and straightforward, with all necessary hardware included in the package.