... picture 3: handfree,night vision 4: ultrathin monitor New 7 inch TFT color video door phone intercom systems with image ... or CCD sensor.6 LED lights,nightvision.**handfree indoor monitor,7 inch TFT,clear image.**intercommunication,monitoring the outdoor,unlock..** ... between indoor and outdoor unit.. **Brightness, chroma and ring adjustable. **3-chord melody rings for option.**two cameras can connected ...