... 3. 7'' flat color CRT monitor 4. Light: IR LED JB-5000 Multi-apartment Intercom System1. Features: The system is applicable ... '',5'',5.8'' & 7 TFT-LCD 2) Display: 420TV lines(B.W), or 300,000 pixels(color) 3)Working voltage:DC12V ... : ≤60mA(static);≤210mA(active) 9)Environment Temperature:-10~+55°c JB-5000 Handsfree color video door phone