SECTION  302  CERTIFICATION:


                                                                   Exhibit  31.2
                                                                   -------------

CERTIFICATION  PURSUANT  TO
SECTION  302  OF
THE  SARBANES-OXLEY  ACT  OF  2002

Certification  of  Principal  Financial  Officer

I,  Joan  E.  Miller,  certify  that

1.   I have  reviewed  this  annual  report  on Form 10-KSB of Sentry Technology
     Corporation;

2.   Based on  my  knowledge,  this  annual  report  does not contain any untrue
     statement  of a material fact or omit to state a material fact necessary to
     make  the  statements  made, in light of the circumstances under which such
     statements  were made, not misleading with respect to the period covered by
     this  quarterly  report;

3.   Based on  my  knowledge,  the  financial  statements,  and  other financial
     information  included in this annual report, fairly present in all material
     respects  the  financial condition, results of operations and cash flows of
     the  registrant  as  of,  and  for, the periods presented in this quarterly
     report;

4.   The registrant's  other  certifying  officer  and  I  are  responsible  for
     establishing and maintaining disclosure controls and procedures (as defined
     in  Exchange  Act  Rules 13a-15(e) and 15d-15(e)) for the registrant and we
     have:

     a)     designed  such disclosure controls and procedures to ensure that
            material information relating to the registrant, including its
            consolidated subsidiaries, is  made  known to us by others within
            those entities, particularly during the period  in  which  this
            quarterly  report  is  being  prepared;

     b)     evaluated  the  effectiveness of the registrant's disclosure
            controls and procedures  and presented in this report our
            conclusions about the effectiveness of  the disclosure controls and
            procedures, as of the end of the period covered by  this  report
            based  on  such  evaluation;  and

     c)     disclosed  in this report any change in the registrant's internal
            control over  financial  reporting  that  occurred  during  the
            registrant's most recent fiscal  quarter  that  has  materially
            affected,  or  is  reasonably  likely to materially  affect,  the
            registrant's internal control over financial reporting; and

5.   The registrant's  other  certifying  officer and I have disclosed, based on
     our  most  recent  evaluation,  to  the registrant's auditors and the audit
     committee  of  registrant's  board  of directors (or persons performing the
     equivalent  function):

     a)     all  significant  deficiencies  and  material weaknesses in the
            design or operation  of  internal controls over financial reporting
            which are reasonably likely  to  adversely affect the registrant's
            ability  to  record,  process, summarize  and  report  financial
            information;  and

     b)     any  fraud,  whether  or  not material, that involves management
            or other employees  who  have a significant role in the registrant's
            internal controls over  financial  reporting.


                              /s/  JOAN  E.  MILLER
                              -------------------------------------------------
                              Joan  E.  Miller
                              Vice  President  and  Principal  Financial Officer


                              March  23,  2007