142 SWITCHBOARD MASTER - 2 Wire Switchboard System The Elvox® 142 Series switchboard is a compact master for systems of up to 800 or more apartment stations. The 142 provides conversation with apartment stations as well as a door entry panel. Lighted switches annunciate both incoming and outgoing calls. Call down audible signalling is by pleasant electronic tone. Easy to use with simple call and answering procedures provide a quick and error free communication system. The 142 also has provisions for Day/Night operation with part time doorman by switching conversation to special handset in superintendants apartment when switchboard is not manned. Remote lock control pushbutton allows the concierge station to control a remote door lock.