This Wireless Video Doorphone Intercom system has a color LCD, and it adopts advanced technology, 2.4g digital wireless technology, which providing a secure and private signal. You not only can see but also can talk to the visitor when visitor press the "CALL" button on the outdoor unit. It can save about 100 photos by taking pictures automatically when visitor press the "CALL" button, and the previous photos will be covered automatically by the new ones. You can put it in the dinning room, study room or anywhere you like within effective signal transmission. As to the application, it can be used in apartments, villas, hotels, offices, public buildings etc.