Power of Attorney

              Know all by these presents, that the undersigned hereby
constitutes and appoints Jacqueline W. Katzel and Jeannine J. Lane of Resideo
Technologies, Inc. (the "Company"), signing singly, the undersigned's true and
lawful attorney-in-fact to:

    1)  execute for and on behalf of the undersigned, in the undersigned's
        capacity as an officer, director or holder of 10% or more of the
        registered class of securities of the Company, Forms 3, 4 and 5 in
        accordance with Section 16(a) of the Securities Exchange Act of 1934, as
        amended, and the rules thereunder;

    2)  do and perform any and all acts for and on behalf of the undersigned
        that may be necessary or desirable to complete and execute any such Form
        3, 4 or 5, complete and execute any amendment or amendments thereto, and
        timely file such forms or amendments with the United States Securities
        and Exchange Commission and any stock exchange or similar authority; and

    3)  take any other action of any type whatsoever in connection with the
        foregoing which, in the opinion of such attorney-in-fact, may be of
        benefit, in the best interest of, or legally required by, the
        undersigned, it being understood that the documents executed by such
        attorney-in-fact on behalf of the undersigned pursuant to this Power of
        Attorney shall be in such form and shall contain such terms and
        conditions as such attorney-in-fact may approve in such attorney-in-
        fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorneys-in-fact,
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Exchange Act.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.


              IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 31st day of October, 2018.


/s/ Niccolo Mcleod De Masi
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Niccolo Mcleod De Masi