... display, video calling &conversation, gate moniter 8cord ringer tone color CCD camera,auto night IR grasp, 5 or 7inch TFT touch ... screen available,video calling &conversation with indoor extentions, guard centers, and outdoor stations,gate moniteringhandsfree function 8cord ... : ~ Out door unit:127(L)×95(W)×35(H)mm ~ Indoor extention:230(L)x173(W)x30(H)mm