... Intercom * standby no power * Isolator module seperates audio,video,control sginals etc Technology Parameter: Working Voltage: DC12VRated power: 2 ... 56(mm)Build-in size: 280*114*34(mm) video,security equipment,alarm system.Standard Apartment System color indoor phone, ... : 164*260*28(mm)Installation: Surface wall mount type security, door chime,module. Function:Intercom between outdoor camera and ...