Commax CMV70S 7inch Wide LED Display Wall-Mounted Type. Compatible with Single House and Apartment Complex. Lobby & Guard station conversation via Smartphone.7 inch wide LED display. CCTV Monitoring, Guard Call & Talk, Porter Call & Talk Paging and calling a Porter (with MODUM distributor), Monitoring & calling visitors and releasing door lock. Expandable up to 2 monitors, 2 door cameras and 2 Interphones. Dimension(mm) : 311(W)×168(H)×32(D)