The SHT-3507 video door phone is installable in living room walls without causing damage due to its non-built-in design structure. It offers effective and easy installation without altering a building's structure. It encourages existing spaces to adapt easily due to better installation time and costs. By co-working with outside door cameras, CCTVs (Closed Circuit Television) and lobby phones, visitors can be monitored and recorded, and allowed to enter the building remotely. A slim, stylish and environment-friendly outer structure refracting light through a transparent bezel is used. It also cuts costs and environmental hazards by excluding post-processing.