The Alpha Communications IA543 Intercom Amplifier is designed to allow two-way communications betweenan open voice lobby panel and multiple apartments. Additional equipment will allow communications withmultiple entrance panels. Entrance panels will signal up to an apartment by pressing the corresponding callbutton, and the resident can answer using TALK and LISTEN buttons. A DOOR button provided on theapartment station can be configured to operate an electric door strike or magnetic lock to allow visitor entry.The IA543 is compatible with additional equipment to provide specialized applications and features such ashearing impaired strobe lights, multiple sequenced door operations, integration into access control systems,and Postal locks. ALPHA COMMUNICATIONS | IA543Intercom Amplifier, Open Voice, Surface Mount, 16 Volt AC, 10 VA, 3.375" Width x 1.25" Depth x 5.625" Height, Flame-Retardant Plastic, For 5/4/3 Wire Apartment Speaker Station
