Adesto Technologies Investor Presentation — June 2018

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1June 29, 2018Adesto to Acquire Echelon

Corporation2Safe Harbor Statement

About Non -GAAP Financial Measures

During this presentation, references to financial measures of Adesto Technologies Corporation (“ Adesto ”) will include references to non -GAAP financial measures.

Adesto provides an explanation of these financial measures in its latest earnings release.

Forward -Looking Statements

This presentation contains forward -looking statements, which are subject to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These

statements include, among other things, statements described as “Expected Financial Benefits” and “Financing & Timeline,” on theslide entitled “Anticipated Benefits

of the Transaction” and relating to expansion of the combined company’s addressable market, projections on the slide captione d “Adesto Pro Forma Financial

Highlights” and statements regarding future events that involve risks and uncertainties. Actual results may differ materiall y from those contained in the forward -

looking statements contained in this presentation, and reported results should not be considered as an indication of future p erformance. The potential risks and

uncertainties that could cause actual results to differ from those projected include the risk that Echelon Corporation stockh olders may not approve the proposed the

proposed acquisition, the closing of the acquisition may not occur or may be delayed, litigation related to the proposed acqu isition may delay or negatively impact the

proposed acquisition, Adesto may be delayed or unable to finance the acquisition due to market conditions or for other reasons, the businesses of the Adesto , S3semi

and Echelon may not be combined successfully, or such combination may take longer, be more difficult, time -consuming or costly t o accomplish than expected; the risk

that sales of Echelon’s products will not be as high as anticipated; the expected growth opportunities, increases in average sales prices, revenues, gross margin and

operating margin, sales channel expansion or cost savings from the acquisition may not be fully realized or may take longer t o realize than expected; customer losses

and business disruption following the acquisition, including adverse effects on relationships with former employees of Echelo n, may be greater than expected; and the

risk that the Company may incur unanticipated or unknown losses or liabilities in connection with the acquisition. Additional factors, that could cause actual results to

differ materially from those expressed in the forward -looking statements include our ability to predict the timing of design win s entering production and the potential