The Bogen Model MCP35A Master Control Panel has been designed to provide cost-effective communications and program distribution facilities for schools and other commercial and industrial establishments.Level controls and aural and visual monitoring of program material are provided. Distribution is accomplished by simple push-button program selection and by following the color-coded guidelines. Emergency announcements to all locations take precedence over program distribution.The MCP35A control panel may be used in conjunction with Bogen room selector panels (and a second program control panel, if desired) to direct intercom or program(s) to selected staff stations. Each room selector panel provides light annunciation for incoming staff station calls. During intercom communication, a supervisory tone sounds at the selected speaker and repeats at regular intervals to prevent unauthorized monitoring.