Grandstream IP Video Door Phone is a security device which is installed in bungalows, residential societies, and high rise buildings. It is required for allowing access to only authorized persons inside building or house. This door phone has been equipped with a high resolution camera which captures images of person standing at front and shows it on monitor screen which is installed in your apartment. It is also provided with mic for communicating with that person. Offered Grandstream IP Video Door Phone is also known to allow opening of main door by just pressing a simple switch which is provided with this system.