1.Mini video door phone 2.wired operation,easy to install. 3.3.5 inch TFT color display screen 4.Elegant&Security Newest arraival video doorphone suit for hotel,homemini Video door phone Advantagesno have interference,very clear and steady voice ,one camera can connect more monitors,also more cameras can connect one monitors.Handfree design,convenient to communicate , super-thin cover monitor, ...