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      Details

      General Info

      System Engineering International (SEI) engineers, manufactures and markets a complete line of uninterruptible DC UPS's and battery systems. It offers its products for use in communications, industrial and military applications, as well as Digital Centrex (ISDN), Voice over Internet Protocol (VoIP) midspan power injectors for power over Ethernet. The company also manufactures integrated services digital network (ISDN) network termination units (NT1's) and ISDN terminals. System Engineering Internationals (SEI) Power Services Division installs, maintains and services a full range of critical (uninterruptible) power systems.

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      Contact Info

      Phones:

      Main - 301-694-9601

      Fax - 301-694-9608

      ExtraTollFree - 800-765-4734

      Address:
      5716 Industry Ln Frederick, MD 21704

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      Categories
      General Contractor Engineers, Civil Engineers, Professional Engineers
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      Data provided by one or more of the following: Thryv, Data Axle, Yext.