Aiphone LEF-10C Open Voice Selective Call Master Intercom

Semi-flush mount master intercom with all-call and door-release buttons works with any combination of up to 10 door, sub-master, or master intercoms (sold separately) to enable audio communication with visitors and other rooms within the building
All-call button works with Aiphone BG-10C adapter (sold separately) to broadcast a message to every intercom connected in the system
Door-release button controls an electric strike (sold separately) to remotely unlock the entrance for a visitor
10 buttons with LED indicators allow the master intercom operator to direct a call and communicate with the desired door or sub-master intercom
Privacy button prevents other intercom users in the system from overhearing a conversation with another intercom