N.H. Rev. Stat. Ann. § 479:27-a

In the event that the note or other obligation secured by the mortgage is further secured by a security agreement on personalty situated on the mortgaged premises, the mortgagee may, at his option and upon notice to the mortgagor, foreclose the real estate and the personal property as a single unit, and compliance with the notice provisions of this chapter shall be deemed to be in compliance with the foreclosure requirements of the Uniform Commercial Code.