1: 7inch color TFT video door phone 2: unlock by ID card,by password,by key,work attendance function 3: handfree,night vision 7" Color Video Door Phone unlock by ID card,by password,by key, work attendance function Model NO.:SMT-V7E-K Function and Features**plastic camera, unlock by ID card,by password,by key, work attendance function,25000 records,good design,CMOS or CCD sensor.6 LED lights, ...