NEWBURY PARK, Calif.–(BUSINESS WIRE)–Electronic Sensor Technology (EST) (OTCBB:ESNR – News) is pleased to announce the appointment of Barry Howe as its new Chief Operating Officer (COO) to be effective on April 11, 2007.

“I am delighted to have Mr. Howe joining EST, for he brings years of experience in the area of instrumentation and management,” said Dr. Teong C. Lim, President of Electronic Sensor Technology.

Mr. Howe was with Thermo Electron Corporation from 1986 through 2004 where he served in various executive positions. Thermo Electron Corporation provides process monitoring and control instrumentation to the metals, chemical, environmental, food and beverage industries. He joined Thermo Electron Corporation as the Assistant Corporate Controller from 1986 to 1989. Mr. Howe was subsequently promoted to President of Thermo Separation Products from 1989-1995; President and CEO of Thermo Bio Analysis from 1995-1998; President and CEO of Thermo Spectra from 1998 to 2000; President and CEO of Thermo Optek from 1999 to 2000; President-Optical Technologies Sector in 2000; and Corporate Vice President and President-Measurement & Control Sector from 2002 to 2004. Before Thermo Electron, Mr. Howe was with the accounting firm of Arthur Andersen and Company where he was an Audit Manager from 1977 to 1985.

Mr. Howe received his BS degree in Business Administration from Boston University in 1977.

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 military applications, maritime port and border security applications.

Contact:

Electronic Sensor Technology

Frank Zuhde, 805-480-1994, ext. 135