Internet of things technology developer Helium has attracted internet holding company Digital Garage to its $16m round.

US-based internet of things technology developer Helium Systems has raised $16m in a series A round led by Khosla Ventures that also included diversified internet company Digital Garage.

The round also featured FirstMark Capital, SV Angel, Marc Benioff, the founder of cloud computing company Salesforce.com, and a range of other undisclosed investors.

Helium has been working on a way to connect devices with each other without relying on traditional wifi, bluetooth or mobile phone networks, instead using low-powered wireless connectivity…