Piezo Sensor Element 20 mm film When it comes to measuring

When it comes to measuring the gas in ppm the analog pin has to be used

control registers

The presence or absence of ferrous gear tooth are detected by measuring this distortion

Output:  1mv / v

The operating frequency is802MHz~928MHz

Piezo Sensor Element 20 mm film When it comes to measuringPiezo element is a sensor which is used to detect vibration, in this case, a knock on a door, table, or other solid surface. A piezo is an electronic device (sensor) that generates a voltage when it's physically deformed by a vibration, sound wave, or mechanical strain. Similarly, when you put a voltage across a piezo, it vibrates and creates a tone. Piezos can be used both to play tones and to detect tones. For more information on piezo electric