... 7inch color TFT video door phone 2: unlock by ID card,by password,by key 3: handfree,night vision 4: ultrathin ... monitor 7 inch video door phone 2 camera with 3 monitor V7I-K1: 7inch color TFT video door ... phone 2: unlock by ID card,by password,by key 3: handfree,night vision 4: ultrathin ... : 10 % - 90%(RH) 7 inch video door phone 2 camera with 3 monitor V7I-K