R2 Wireless, the defensive security technology company building a foundational layer for passive RF spectrum awareness, has raised more than $5 million in new funding, bringing total capital raised to over $13 million. The fresh capital will accelerate the company's U.S. expansion, including engineering hires as well as defense and commercial partnerships following successful deployments in Europe and the Middle East.

R2 Wireless is a defense and security technology company specializing in passive radio frequency (RF) spectrum sensing and situational awareness. Founded and led by former Israeli and US military veterans and PhD researchers, the company developed its technology under Israel's high-threat environments before expanding into Europe and the United States. R2's platform passively monitors the entire RF spectrum to detect and locate transmissions such as drones and wireless devices without emitting signals or compromising privacy. The company serves the DoW (Department of War), public safety, border security and critical infrastructure customers worldwide and has raised more than $13 million in funding to date.