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PROPRIETARY AND CONFIDENTIAL DRAFT 28/Feb/03


                                                                            Detailed Component Descriptions
                                                                                                                 1
                                                                                     Chapter 1: Introduction


               Detailed Component Descriptions


                              The MedPlus TotalAlert™ Alarm Network can consist of the following:
                              Master Alarm, Area Alarm, Local Alarm, Area Alarm Network
                              Communications Board, and gas-specific transducers that include the
                              appropriate DISS, gas-specific, demand valves.

                              Master Alarm

                              The Master Alarm continuously monitors up to 60 input signals from source
                              equipment by using dry contact switches (see figure 1-13 on page 1-23). The
                              monitored signals are supervised for open-circuit conditions.


                                               Figure 1-13.  Master Alarm






































                              NOTE:
                              The available 60-Point Master Alarm is two 30-Point Master Alarms mounted
                              in one housing.











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