SEC FORM 4

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

AMSALEM MICHEL A

(Last)

(First)

(Middle)

MIDSUMMER INVESTMENT LTD

295 MADISON AVENUE 38TH FLOOR

(Street)

NEW YORK

10017

(City)

(State)

(Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
10/10/2007

4. If Amendment, Date of 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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/10/2007		A		1,157,407⁽³⁾	A	$0.08	1,157,407⁽³⁾	I	By Midsummer Investment Ltd.⁽⁵⁾
Common Stock								502,677⁽³⁾	I	By Midsummer Investment Ltd.⁽⁵⁾

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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)⁽¹⁾	$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⁾

Explanation of Responses:

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)

	/s/ Philip Yee, as Attorney-in-Fact for Michel Amsalem	10/16/2007
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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