... IR led light for clear night vision 7" Wired Video doorphone DH-2801M11Simply features:1,7"inch display screen2,CMOS ... camera3,Light Source at Night: Infrared LED 4,Video intercom,unlocking,monitor functions5,handfree monitor6,Ring Tone: ... Connection: Four-wired Power: 4W Definition: 420 TV Line System: PAL or NTSC Size of Lens: 3.6mm Angle ... : See page 5 Weight:190g 7" Wired Video doorphone