EXHIBIT
23.1
CONSENT
OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
Board of
Directors
Telkonet,
Inc.
Germantown,
MD
We
consent to incorporation by reference in the Registration Statements
(Registration No. 333-142986, 333-148731, 333-114425, 333-129950,
333-137703, 333-141069, 333-138001, 333-152051) on Form S-3 of Telkonet, Inc.
and its subsidiaries of our reports dated April 1, 2009, with respect to
the consolidated balance sheets of Telkonet, Inc. and its subsidiaries as
of December 31, 2008 and 2007, and the related consolidated statements of
losses, stockholders' equity, and cash flows for the two years ended December
31, 2008, which reports appear in the December 31, 2008 annual report on Form
10-K of Telkonet, Inc. and its subsidiaries.
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/s/ RBSM LLP
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RBSM
LLP
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Certified
Public Accountants
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New York,
New York
April 1,
2009