Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
AMSALEM MICHEL A
  2. Issuer Name and Ticker or Trading Symbol
Electronic Sensor Technology, Inc [ESNR]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
295 MADISON AVENUE 38TH FLOOR
3. Date of Earliest Transaction (Month/Day/Year)
08/14/2007
(Street)

NEW YORK, NY 10017
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/14/2007   A   502,677 (3) A $ 0.18 502,677 (3) I By Midsummer Investment Ltd. (5)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Convertible Debentures (right to buy) (1) $ 0.4             12/07/2005 12/07/2009 Common Stock 11,250,000 (2) (3) (4)   11,250,000 (2) (3) (4) I By Midsummer Investment Ltd. (5)
Warrants (right to buy) $ 0.43             12/07/2005 12/07/2010 Common Stock 7,798,059 (2) (3) (4)   7,798,059 (2) (3) (4) I By Midsummer Investment Ltd. (5)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
AMSALEM MICHEL A
295 MADISON AVENUE 38TH FLOOR
NEW YORK, NY 10017
  X      

Signatures

 /s/ Philip Yee, as Attorney-in-Fact for Michel Amsalem   08/14/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) $4,500,000 of 8% Convertible Debentures.
(2) Subject to anti-dilution adjustments.
(3) The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, if any, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the reported shares of purposes of Section 16 or for any other purpose.
(4) The conversion of the debentures and exercise of the warrants by Midsummer Investment Ltd. is contractually capped such that such conversion or exercise, as applicable, shall not cause Midsummer's beneficial ownership to exceed 4.99%, unless waived by Midsummer, and in no event to exceed 9.99% (without giving effect to shares of common stock underlying any unconverted portion of the debenture or unexercised portion of the warrant).
(5) Mr. Amsalem is a member of Midsummer Capital, LLC, which serves as investment advisor to Midsummer Investment Ltd. and may be deemed to have an indirect pecuniary interest in the securities, but disclaims such pecuniary interest.
 
Remarks:
Exhibit 24 - Power of Attorney (incorporated by reference from Form 3/A filed on January 9, 2007)

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