Bb sensors pressure sensor modules voltage and i2c outputs bb sensors drmod i2c r4b this 0 to 4 bar pressure sensor module has both a calibrated analog 0 to 5v voltage output and a digital i2c interface that can directly communicate with a microcontroller precise calibration at 7x measuring points gives outstanding precision and a very low temperature residual error the high resolution measured values make integration with customer specific products easy shortening time to market product