Video door phones are one of the most required security tools, mainly used in homes, apartments, and businesses. Video door phones help you to communicate visitors with the reduced efforts and high security. These equipments are reliable and effective in reducing the crime to a great extent. It can be considered as a stand alone security system used for managing calls made at the entrance of a building. The main function of video door phone is to identify the visitor and allow the access after having words with the visitor.
Video door phones consist mainly an indoor monitor and an outdoor electronic lock release. Outdoor panels are installed beside the door and include various push buttons usually one for each home or apartment, a camera to click the image of the visitor, a microphone to pick the voice of the visitor and a speaker to respond. This is how the whole video door phone system works. The mode of the communication system is full duplex.