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The MX28B dc power plant, however, permits the user to program the system alarms in various ways. A Printed Circuit (PC) board designated “EAA-0075” is mounted in the space above the master control unit and provides terminal block connection points for alarm outputs and alarm inputs (Figure 5-8). These cage-clamp terminal blocks are operated by pushing back the lever, inserting the wire and then releasing the lever to clinch the connection. Recommended wire size is #28 AWG to #20 AWG. Alarm Outp