The sound sensor BT80i consists of a microphone followed by an internal amplifier. It measures variations in air pressure caused by sound waves. Because of the high sensitivity, the sensor is very much suited to detect pressure pulses. The dB-calibration in the Coach7 software allows using this sensor for dBmeasurements (up to 124 dB).

Range: -45 ... 45 Pa
Resolution (12-bit): 22 mPa

Can be used to:
• measure sound waveforms and beat patterns,
• investigate human voice and sounds from various musical instruments,
• measure the speed of sound through air and other materials.