color CCD camera video calling &conversation, gate moniter 8cord ringer tone, surface mounting; ... *480~ Wiring method:6core & AV input ~ surface mounting: video calling & conversation, door gate monitoring, handsfree operation; ~ Systems matching: can be 1 ... )mm ~ Indoor extention:200(L)x80(W)x63(H)mm 4'' TFT Color Video door Phone (indoor extension phone for villa, schools, highrise buidings, offices ...