For Multiple Families, Villa, Mension & Apartment 5" Color LCD Monitor Color Hands-free System Communication - Monitor to door camera / Common gate Camera (Audio & Video) - Monitor to guard office Interphone (Audio only) - Telephone (call receiving only) Emergency Function - When emergency button on monitor is pressed - It makes the emergency siren to guardroom - The house number is display in guardroom master and have communication with guard Absence Function - When absence button on monitor is pressed, guard can notice the absence of the house. Detection Function of Gas, Fire & Burglar - Onec these kinds of emergency are occurred, It makes the siren to guardroom. Door Release Embedment Type Model No. Color LCD Front Door, Guardroom, Common Front Door, Emergency, Security 1 & 2 Fire & Gas Leakage prevention 900MHz Wireless Telephone Telephone KHV-456S 5" O O O KHV-456T 5" O O KHV-456ST 5" O O O O KHV-446S 4" O O O KHV-446T 4" O O KHV-446ST 4" O O O O