EXHIBIT 4.19

November 4, 2016

Perceptron, Inc.

47827 Halyard Dr.

Plymouth,  Michigan48170

Re: Amended and Restated Credit Agreement dated as of November 16, 2010, by and between Perceptron, Inc. (“Company”) and Comerica Bank (as amended, “Credit Agreement”)

Gentlemen:

Company has advised the Bank that it has violated the provisions of Section 7.11 of the Credit Agreement for the period ended September 30, 2016(the “Covenant Violation”). Company has requested that the Bank waive any Event of Default under theCredit Agreement resulting from the Covenant Violation. The Bank hereby waives the Covenant Violation (“Waiver”).

This Waiver shall not be deemed to amend or alter in any respect the terms and conditions of theCredit Agreement, or to constitute a waiver or release by the Bank of any right, remedy Default or Event of Default under the Credit Agreement, except to the extent expressly set forth above. Furthermore, this Waiver shall not affect in any manner whatsoever any rights or remedies of the Bank with respect to any other non-compliance by the Company with the Credit Agreement or the Loan Documents whether in the nature of an Event of Default or otherwise, and whether now in existence or subsequently arising.

Except as specifically defined to the contrary herein, capitalized terms used in this Waiver shall have the meanings given them in the Credit Agreement.

Very truly yours,

COMERICA BANK

By:/s/ Norman L. Bird

Its:SVP