SEC Form 3

FORM 3

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

OMB APPROVAL OMB Number: 3235-0104 Expires: February 28, 2011 Estimated average burden hours per response 0.5

1. Name and Address of Reporting Person* Halfmoon Bay Capital Ltd (Last) (First) (Middle) TRIDENT CHAMBERS, P.O. BOX 146 (Street) ROAD TOWN TORTOLA D8 00000 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 03/28/2008	3. Issuer Name and Ticker or Trading Symbol Electronic Sensor Technology, Inc [ ESNR ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year) 04/08/2008
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	86,419,753 ( 3 )	D ( 1 )

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Convertible Debenture (right to buy) ( 2 )	03/28/2008	03/28/2013	Common Stock	41,152,263 ( 3 )	0.0486	D ( 1 )

1. Name and Address of Reporting Person* Halfmoon Bay Capital Ltd (Last) (First) (Middle) TRIDENT CHAMBERS, P.O. BOX 146 (Street) ROAD TOWN TORTOLA D8 00000 (City) (State) (Zip)

1. Name and Address of Reporting Person* Wan Hamzah Wan Azmi (Last) (First) (Middle) SUITE 10.3, WEST WING, ROHAS PERKASA 9 JALAN PERAK (Street) KUALA LUMPUR N8 50450 (City) (State) (Zip)

1. Name and Address of Reporting Person* Nik Manshor Nik Anida (Last) (First) (Middle) SUITE 10.3, WEST WING, ROHAS PERKASA 9 JALAN PERAK (Street) KUALA LUMPUR N8 50450 (City) (State) (Zip)

Explanation of Responses:

1. The shares of common stock and debenture are owned directly by Halfmoon Bay Capital Ltd and indirectly by Wan Azmi Bin Wan Hamzah and Nik Anida Bte Nik Manshor, who are both shareholders and directors of Halfmoon Bay Capital Ltd. Halfmoon Bay Capital Ltd has three shareholders, who are Wan Azmi Bin Wan Hamzah, Nik Anida Bte Nik Manshor and Wan Afzal Bin Wan Azmi and two directors, who are Wan Azmi Bin Wan Hamzah and Nik Anida Bte Nik Manshor.

2. $2,000,000 of a 9% Convertible Debenture.

3. Wan Afzal Bin Wan Azmi expressly disclaims beneficial ownership of these securities as Wan Afzal Bin Wan Azmi is not a director of Halfmoon Bay Capital Ltd and the Board of Directors of Halfmoon Bay Capital Ltd makes the ultimate voting and investment decisions with respect to these shares.

Remarks:

Exhibit List: Exhibit 24.1 Power of Attorney for Halfmoon Bay Capital Ltd (incorporated herein by reference from Exhibit 24.1 of the Form 3 filed on April 8, 2008) Exhibit 24.2 Power of Attorney for Wan Azmi Bin Wan Hamzah (incorporated herein by reference from Exhibit 24.2 of the Form 3 filed on April 8, 2008) Exhibit 24.3 Power of Attorney for Nik Anida Bte Nik Manshor

	/s/ Philip Yee, Attorney-in-Fact for Halfmoon Bay Capital Ltd	04/10/2008
	/s/ Philip Yee, Attorney-in-Fact for Wan Azmi Bin Wan Hamzah	04/10/2008
	/s/ Philip Yee, Attorney-in-Fact for Nik Anida Bte Nik Manshor	04/10/2008
	** 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 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.