Wheelock Inc., offers computer-based tools to assist the design and installation of fire alarm, voice evacuation and facility communications systems. The NACTool allows users to quickly and easily build NAC circuits using Wheelock's notification appliances. The program precisely calculates the number of appliances per circuit as well as the total length and wire gauge, percentage of voltage drop and speaker wattage. Users also can print out material inventories. Another computer-based design tool called the STROBETool calculates performance-based strobe coverages per NFPA National Fire Alarm Code 2002, Chapter 7. Wheelock Inc.

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