The UK company’s cloud-based software is already being used by business including Scottish Power, Securitas and telecoms companies TDC and Belgacom.
Seraphim Capital and Carbon Trust also took part in the funding round, which brought the total raised by Intamac to about £14.5m.
YFM first invested in the business in 2010.
Firm director David Bell said, “We are delighted to support [CEO David Perez] and the Intamac team who have recently seen a rapid growth in sales prospects for their innovative Enso platform.
“The internet of things concept is being embraced by consumers with a wide range of new products coming to market, including cameras, heating controls, fire alarms and even fridge’s and washing machines.”
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