Feature:
.Surface-mounted, 7 inch color TFT screen with sensor buttons
.Intercom, broadcast, call transfer among indoor monitors
.Support up to 4 indoor monitors and 2 door stations
.Support visitor-calls transferable to telephone
.Support door released by telephone remotely or any indoor monitors
.Support image capture function with 64 images memory
.Support insert SD card for saving captured images to computer
.Room-to-room internal communication
.Support 4-channel CCTV and 2 door stations security surveillance by viewing 6 video channel images at the same time.
.Can connect TV, DVD or MP3 player to watch TV and listen to music from indoor monitor.
.Color / contrast / brightness / volume adjustable
.Do Not Disturb function
.4 wires twisted pair cables, simple star cable installation