The Elvox 660A series monitor is designed to meet any requirement for video intercom security. The 6600 is desk mounted with a weighted base. The 660A features a hi resolution 625 lines, 4" color LCD display, selectable electronic tone signal with adjustable volume and ELD mute indication. Conversation with the entry panel is full duplex open voice. Pushbuttons are provided for monitor activation, door release, and 2 auxiliary functions. Brightness and color control. Door status LED monitors entry doors provided with switch contacts. Selective privacy for use with 6680 systems, AC or tone ring. Swivel mounted display provides for easy viewing from any angle.