... 2.1/3 CCD Sony camera 3.Night vision with IR LED 4.Modularized of door panels 5.Burglar ... 5.Cast aluminium panel, flush mount.6.Night viewing with IR LED.7.Easy to replace name tags.8.Card ... parameters: Display: 4 CRT/TFT-LCD, or 3.5'',5'',5.8'' & 7 TFT-LCD Display: 420TV lines(B.W), ... Temperature: -10~+55°cPics: Direct-call door phone system with built-in LED,Sony CCD camera and changable name tags