NEWBURY PARK, Calif.–(BUSINESS WIRE)—September 14, 2006–Electronic Sensor Technology (EST), a leading provider of innovative homeland security and environmental solutions, announced the receipt of initial orders from 3 separate organizations. 1) Cherokee Industries, a manufacturer and systems integrator of environmental products. 2) Omega Scientific based in Singapore, this initial order is for security applications and 3) The government of the Kingdom of Saudi Arabia through our distributor Applied Systems International for their use in Homeland Security applications. It is anticipated that these initial orders are precursors to additional follow-on orders.

“We are very pleased with these initial orders that I believe are the beginnings of continuing long-term relationships with each of these organizations, ” said Dr. Teong Lim, Presiden, and CEO of EST. We expect Saudi Arabia and other Middle East Countries to use the zNoseâ instruments to strengthen their security positions in the near future.

More information on the use of the zNoseâ for security applications can be obtained by clicking the following link:

https://www.estcal.com/TechPapers/Security/zNose_Debuts_ASIS.pdf

About Electronic Sensor Technology:

Founded in 1995, Electronic Sensor Technology has developed and patented a chemical vapor analysis process. We believe that the Company’s product line is positioned to eliminate key vulnerabilities in the homeland security market, specifically in maritime port, airport, and border security applications.

SEC Filings and Forward-Looking Statements

This press release includes forward-looking statements, including the Company’s expectations regarding its ability to develop and access capital markets and its ability to achieve expected results in the chemical detection and analysis industry. The forward-looking statements are identified through the use of the words “potential,” “anticipate,” “expect,” “planned” and other words of similar meaning. These forward-looking statements may be affected by the risks and uncertainties inherent in the chemical detection and analysis industry and in the Company’s business. The Company cautions readers that certain important factors may have affected and could in the future affect the Company’s beliefs and expectations, and could cause the actual results to differ materially from those expressed in any forward-looking statement made by or on behalf of the Company. For a discussion of these factors, please refer to our recent filings with the Securities and Exchange Commission, including our most recent report on Form 10-KSB. The Company undertakes no obligation to update forward-looking statements to reflect events or circumstances after the date hereof.

Contact:

Electronic Sensor Technology

Frank Zuhde, 805-480-1994 X 135 or

Aurelius Consulting Group, Inc.

Jon Cunningham, 407-644-4256 X 107