Explore Now New Delhi: 75F, which designs and manufactures IoT-based Building Management System, on Friday said it has raised USD 5 million from Siemens AG, bringing total 'Series A' funding to USD 28 million. Next47, a global venture capital firm backed by Siemens, led the investment on behalf of Siemens Smart Infrastructure, said a statement from 75F. 75F has raised USD 5 million from Siemens AG in this round, said the Bengaluru-headquartered company. Siemens AG joins previous investors including Bill Gates' Breakthrough Energy Ventures, Climate Initiative, and WIND to accelerate company expansion, it added. "The latest influx in 75F's Series A funding round brings the Minneapolis-based company's total funding to USD 28 million," said 75F.