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EX-31.1 - CERTIFICATION UNDER RULE 13A-14(A)/15D-14(A) OF PRINCIPAL EXECUTIVE OFFICER - DYNATRONICS CORPexh31_1.htm
EX-32.1 - CERTIFICATION UNDER SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. SEC - DYNATRONICS CORPexh32_1.htm
EX-23.2 - CONSENT OF BDO USA, LLP - DYNATRONICS CORPexhibit23_2.htm
EX-23.1 - CONSENT OF TANNER LLC - DYNATRONICS CORPexh23_1.htm
EX-21 - SUBSIDIARIES OF THE REGISTRANT - DYNATRONICS CORPexh21.htm
10-K - 10K - DYNATRONICS CORPdynatronics.htm
Exhibit 31.2
CERTIFICATION UNDER
Rule 13a-14(a) or Rule 15d-14(a)

I, David A. Wirthlin, certify that:
1.
I have reviewed this Annual Report for the year ended June 30, 2017 on Form 10-K of Dynatronics Corporation;
2.
Based on my knowledge, this 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 report;
3.
Based on my knowledge, the financial statements, and other financial information included in this 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 report;
4.
The registrant's other certifying officer(s) 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)) and internal control over financial reporting (as defined in Exchange Act Rules 13a–15(f) and 15d–15(f)) for the registrant and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, 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 report is being prepared;
(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c) 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
(d) 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 (the registrant's fourth fiscal quarter in the case of an annual report) 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(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
(a) All significant deficiencies and material weaknesses in the design or operation of internal control 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 control over financial reporting.
Date: September 27, 2017
 
  /s/ David A. Wirthlin
 
David A. Wirthlin
 
Chief Financial Officer
 
(Principal Accounting and Financial Officer)