Solenoid valves and sensors are crucial for the safe and efficient operation of hydrogen applications in industry, cars and commercial vehicles. They must be highly leak-proof and resistant to high pressures and low temperatures. ETO solenoid valves and sensors for hydrogen applications must therefore also meet the highest requirements in terms of safety, material resistance and reliability. In industry, cars and commercial vehicles, they are crucial for the efficient and safe use of hydrogen as an energy source. Progressive development in this area is helping to ensure that hydrogen plays an increasingly important role in the future of sustainable energy.