Kistler has introduced the 4012A absolute pressure sensor tailored for hydrogen applications, particularly for measuring hydrogen pressure in combustion engines and fuel cells. The sensor is built to offer reliable measurements, crucial for optimizing hydrogen-fueled combustion engines and monitoring pressure in fuel cells. Through rigorous testing, the sensor has demonstrated its high resilience to hydrogen, addressing key challenges posed by the diffusion and accumulation of hydrogen that can lead to material embrittlement and affect measurement accuracy. The sensor caters to the rise of a large-scale hydrogen economy, supporting the transition towards decarbonized mobility by facilitating almost emission-free operation in combustion engines using hydrogen or H2-based fuels. Additionally, Kistler's sensor aids engine developers in enhancing hydrogen combustion and gas exchange analysis. The 4012A sensor also plays a vital role in monitoring hydrogen pressure in the low-pressure range of fuel cells, offering precise measurements with piezoresistive absolute pressure sensing available in two ranges: up to 20 bar and 50 bar. This innovation signifies a step forward in sensor technology for hydrogen applications within the automotive and energy sectors.