hands-free video indoor unit

black-and-white4"flat display screen,colorful3.5",4",5",5.6"TFTdisplay screen,monitoring,calling,alarming and unlocking function,it can be connected to secondary confirmation outdoor unit,support parallel connection of indoor unit,be equipped with one-way immediate-alarming security area,outline dimension:250X223X50mm,installation mode:wall-hanging mode and embedded mode,standard security mode:wall-hanging mode and embedded mode

hands-free video indoor unit:

hands-free video indoor unit:black-and-white4"flat display screen,colorful3.5",4",5",5.6"TFTdisplay screen,monitoring,calling