Traditionally industrial sensors have been connected to the 4-20 mA bus at factory level: today this standard is still living, but many other things have changed. Key sensors in the industry are proximity, pressure, temperature, which can deliver the key information coming from the typical industrial process where liquids, gases and flow are managed. These sensors are cost expensive and today, when possible, are replaced by ICs that can do the same job with better performances (i.e. repeatability, diagnostics) saving lot of money. For instance, MEMS technology based sensors like accelerometer, magnetometers, gyroscope, pressure, temperature, humidity, microphone and others are self-contained devices that can do the job in an effective manner. These MEMS sensors are in the ST 10 years longevity program and withstand with industrial requirement.