System Engineering International (SEI) is a DC power and telecommunication products and service company. SEI engineers,   manufactures, and markets a complete line of uninterruptible low to mid-range DC power systems for digital Centrex (ISDN), VoIP, Power over Ethernet, and other DC Power applications. SEI also manufactures ISDN network termination units (NT1's) and sells ISDN terminals. SEI Power Services Division installs, maintains, and services a full range of critical (uninterruptible) power systems, both UPS's and DC plants, from all manufacturers.   Our products can be purchased directly, or through authorized resellers and distributors such as Anixter and Graybar. SEI Direct is a sales and distribution division that supplies telephony and computer equipment and services.

>> PRODUCT HIGHLIGHT  >> SEI NEWS Introducing The Juice Box Power over Ethernet for VoIP phones and wireless access points. Qualified customers get a FREE Juice Box! Click here! SEI announces a series of DC UPS's! SEI introduces three models of 48 Vdc uninterruptible power systems with output current up to 13.5 Amps. These units feature customer-selected output distribution modules to facilitate use with a wide variety of applications. A wide range of battery pack options provide backup time from 20 minutes to 8 hours. Click Here for more information.  > SUPPORT/SALES  > SITEMAP

System Engineering International, Inc. • 5115 Pegasus Court • Suite Q • Frederick, MD 21704 Voice: (301) 694-9601 • Fax: (301) 694-9608 • Email: info@seipower.com