FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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
                      

1. Name and Address of Reporting Person *

Dudley Thomas J.

2. Date of Event Requiring Statement (MM/DD/YYYY)
11/24/2008 

3. Issuer Name and Ticker or Trading Symbol

Electronic Sensor Technology, Inc [ESNR]

(Last)        (First)        (Middle)

1077 BUSINESS CENTER CIRCLE

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                            _____ 10% Owner
_____ Officer (give title below)          _____ Other (specify below)

(Street)

NEWBURY PARK, CA 91320       

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed (MM/DD/YYYY)

12/8/2008 

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 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)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4) 		2. Date Exercisable and Expiration Date
(MM/DD/YYYY) 		3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4) 		4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: 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
Stock Option (right to buy)     (1) 11/24/2018   Common Stock   500000   (2) $.02   D    

Explanation of Responses:
( 1)  The options granted to Dr. Dudley will vest as follows: 25% of the option shares will vest on November 24, 2009, 25% of the option shares will vest on November 24, 2010, 25% of the option shares will vest on November 24, 2011 and 25% of the option shares will vest on November 24, 2012.
( 2)  This amendment is being filed to correct the number of option shares granted to Dr. Dudley.

Remarks:
Exhibit List:

Exhibit 24 - Power of Attorney (incorporated by reference from Form 3 filed on December 8, 2008)

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Dudley Thomas J.
1077 BUSINESS CENTER CIRCLE
NEWBURY PARK, CA 91320 		X



Signatures
/s/ Philip Yee, Attorney-in-Fact for Thomas Dudley 1/2/2009
** 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 control number.
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