... connected to both door station and indoor phone.Anti-vandal, waterproof, cast aluminium, surface mount.Night viewing with IR LED.Handsfree indoor ... resistance somePower supply(adapter)1 piece Screw driver 1 pieceDoor station bracket(VI)1 piece Expansion plug someIndoor phone bracket1 ... wires cable(10meters)1 piece User's manual 1 pieceDoor station with indoor phonesVI,V22VI,V21,V23VI,V12,V18 Video door ...