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                                                              SEC FILE NUMBER
                                                                    000-51859

                                                                  CUSIP NUMBER
                                                                    285835104


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25

                           NOTIFICATION OF LATE FILING

(Check one): [X] Form 10-K  [ ] Form 20-F  [ ] Form 11-K  [ ] Form 10-Q
             [ ] Form 10-D  [ ] Form N-SAR [ ] Form N-CSR
             For Period Ended: December 31, 2008
             [ ] Transition Report on Form 10-K
             [ ] Transition Report on Form 20-F
             [ ] Transition Report on Form 11-K
             [ ] Transition Report on Form 10-Q
             [ ] Transition Report on Form N-SAR
             For the Transition Period Ended: ____________________________

Nothing in this form shall be construed to imply that the Commission has
verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify
the Item(s) to which the notification relates:

___________________________________________________

PART I - REGISTRANT INFORMATION

Electronic Sensor Technology, Inc.
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Full Name of Registrant

1077 Business Center Circle
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Address of Principal Executive Office (Street and Number)

Newbury Park, California 91320
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City, State and Zip Code

PART II - RULES 12b-25(b) AND (c)

If the subject report could not be filed without unreasonable effort or expense
and the registrant seeks relief pursuant to Rule 12b-25(b), the following should
be completed. (Check box if appropriate)

     (a)  The reason described in reasonable detail in Part III of this form
          could not be eliminated without unreasonable effort or expense;

     (b)  The subject annual report, semi-annual report, transition report on
          Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion
          thereof, will be filed on or before the fifteenth calendar day
[X]       following the prescribed due date; or the subject quarterly report or
          transition report on Form 10-Q or subject distribution report on Form
          10-D, or portion thereof, will be filed on or before the fifth
          calendar day following the prescribed due date; and

     (c)  The accountant's statement or other exhibit required by Rule 12b-25(c)
          has been attached if applicable.

PART III - NARRATIVE

State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR,
N-CSR, or the transition report or portion thereof, could not be filed within
the prescribed time period.

Electronic Sensor Technology, Inc. (the "company") has been unable to complete
the preparation and assimilation of information required for its annual report
on Form 10-K for the period ended December 31, 2008 by the prescribed due date
therefor without unreasonable effort and expense due to the timing of certain
events and transactions and the unavailability of certain information related
thereto that may materially affect the disclosure to be contained in the annual
report. Electronic Sensor Technology, Inc. expects to file its annual report on
Form 10-K by the fifteenth calendar day following the required filing date, as
permitted by Rule 12b-25.

PART IV - OTHER INFORMATION

     (1)  Name and telephone number of person to contact in regard to this
          notification

          Philip Yee              (805)                 480-1994
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           (Name)              (Area Code)         (Telephone Number)

     (2)  Have all other periodic reports required under Section 13 or 15(d) of
          the Securities Exchange Act of 1934 or Section 30 of the Investment
          Company Act of 1940 during the preceding 12 months or for such shorter
          period that the registrant was required to file such report(s) been
          filed ? If answer is no, identify report(s). Yes [X] No [ ]

     (3)  Is it anticipated that any significant change in results of operations
          from the corresponding period for the last fiscal year will be
          reflected by the earnings statements to be included in the subject
          report or portion thereof? Yes [X] No [ ]

          ___________________________________________________

          If so, attach an explanation of the anticipated change, both
          narratively and quantitatively, and, if appropriate, state the reasons
          why a reasonable estimate of the results cannot be made.

          For the fiscal year ended December 31, 2008, Electronic Sensor
          Technology, Inc. anticipates that the annual report will reflect a net
          loss of approximately $1.301 million as compared to a net loss of
          $4.375 million for the fiscal year ended December 31, 2007.

          The company expects to report a decrease in revenues of approximately
          22% for 2008 as compared to 2007. The expected decrease in revenues is
          predicted to result from a significant drop in business from the
          company's Chinese distributor in the first two quarters of 2008.
          Although business from this customer increased in the second half of
          2008, it was not enough to offset the drop in business during the
          first two quarters of 2008.

          Consistent with the decrease in revenues, the company anticipates that
          the cost of sales will be approximately 23% lower in 2008 as compared
          to 2007. As a percentage of revenues, cost of sales are expected to be
          60% and 62% for 2008 and 2007, respectively. Cost of sales continue to
          be negatively impacted by manufacturing variances resulting from a
          slow down in production to reflect lower sales activities and to
          work-off existing inventory.

          Costs related to operating expenses, including research and
          development, selling expenses, compensation expenses and general and
          administrative expenses are expected to be lower for 2008 as compared
          to 2007. The company also expects to report a gain of approximately
          $1.261 million from extinguishment of debt resulting from the early
          retirement of 8% convertible debentures, as more fully described in
          the company's

          quarterly report on Form 10-Q for the quarterly period ended September
          30, 2008 filed with the U.S. Securities and Exchange Commission on
          November 3, 2008.

          CAUTION REGARDING FORWARD-LOOKING STATEMENTS

          Certain statements in this Notification of Late Filing on Form 12b-25
          with respect to future expectations or future financial or business
          performance of the company are forward-looking statements within the
          meaning of Section 27A of the Securities Act of 1933, as amended, and
          Section 21E of the Securities Exchange Act of 1934, as amended. These
          forward-looking statements may contain the words "believe,"
          "anticipate," "expect," "predict," "estimate," "project," "will be,"
          "will continue," "will likely result," or other similar words and
          phrases.

          Risks and uncertainties exist that may cause results to differ
          materially from those set forth in these forward-looking statements.
          Factors that could cause the anticipated results to differ from those
          described in the forward-looking statements include: risks related to
          changes in technology, the company's dependence on key personnel, the
          company's ability to protect its intellectual property rights,
          emergence of future competitors, changes in the company's largest
          customer's business and government regulation of homeland security
          companies. The forward-looking statements speak only as of the date
          they are made. The company does not undertake to update
          forward-looking statements to reflect circumstances or events that
          occur after the date the forward-looking statements are made.

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                       Electronic Sensor Technology, Inc.
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                  (Name of Registrant as Specified in Charter)

has caused this notification to be signed on its behalf by the undersigned
hereunto duly authorized.


Date: March 31, 2009                     By: /s/ Philip Yee
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                                            Philip Yee, Secretary, Treasurer and
                                            Chief Financial Officer