ultrasonic Piezo ceramic
Piezoelectric ceramic sheet is the most common electro-acoustic device capable of reverse transduction. It can be used as a sound generator ("electric-to-sound" conversion), but also as a sound pickup ("sound-to-electric" conversion) , Can also be used as a force sensitive sensor, etc.
1. Simple structure
2. Ultra-thin type (generally less than 1mm thick)
3. Low power consumption
4. high sensitivity
5. Reversible conversion signal
6. High voltage resistance (even if 100V voltage is applied to both ends, it is safe and sound)
7. Not easy to damage
8. cheap price
9. Easy to use.