Sutron Corporation Books $2,064,582 April 2006.

STERLING, Va. -- Sutron Corporation (NASDAQ:STRN), a leading provider of hydrological, meteorological, and oceanic monitoring products, systems and services, is pleased to announce the receipt of orders totaling $2,064,582 in April, 2006. The following orders were the most significant:

(1) A $705,887 order from Prime Controls to install monitoring
    stations in New Orleans on three primary water control canals for
    the US Army Corps of Engineers. Reliable real-time monitoring of
    these canals is vital for managing risk during the up-coming 2006
    hurricane season, beginning in one month. Sutron plays a key role
    in securing this critical New Orleans infrastructure by providing
    monitoring, warning and control expertise, systems and services.

(2) Three orders equaling $603,939 from the South Florida Water
    Management District (SFWMD) for supplemental engineering services.

(3) A $336,470 order from the US Geological Survey's HIF for Sutron's
    GOES Satellite Transmitter/Logger, SatLink2, and various sensors
    for measuring water level. This order is primarily to replace
    equipment damaged as a result of Hurricane Katrina in Alabama,
    Mississippi, Louisiana and Texas.

(4) A $210,978 order from Global Elite, Sutron's agent in Panama, to
    provide weather and water monitoring equipment to ETESA (Empresa
    de Trasmision Electrica), the company responsible for production
    and distribution of electric power in Panama.

Sutron Corporation's total bookings for the first four months of this year are $5,910,356.

Sutron designs, manufactures, installs and supports system solutions for hydrological, meteorological, and coastal/oceanic systems monitoring water level, water quality, flooding, coastline and tidal parameters, weather, dam safety and hydropower. Sutron's customers include Federal Agencies such as the US Geological Survey, the National Oceanic and Atmospheric Administration, the Army Corps of Engineers, and the National Weather Service.

This release contains forward-looking statements, including statements regarding Sutron's expected commercial operations as well as statements that include words such as "anticipate," "if," "believe," "plan," "estimate," "expect," "intend," "may," "should" and other similar expressions that are forward-looking statements. These forward-looking statements are based on a number of assumptions and Sutron's actual results and operations may be materially different from those expressed or implied by such statements. By making these forward-looking statements, the Company undertakes no obligation to update these statements for revisions or changes after the date of this release.