1 Piece 27mm Piezoelectric Transducers Piezoelectric Sensor , Piezo Transducer RF Remote Control Transmitter Switch Threshold Potentiometer: you can change

Threshold Potentiometer: you can change the trigger condition by adjusting the threshold potentiometer in digital signal mode

Operating Temperature: 0-50°C

This gives the added benefit of tying the breadboard ground to the dev boards ground as well

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Durable Design: Built to withstand harsh environments and provide long-lasting durability

1 Piece 27mm Piezoelectric Transducers Piezoelectric Sensor , Piezo Transducer RF Remote Control Transmitter Switch Threshold Potentiometer: you can changeA 27mm piezoelectric Transducer sensor or element is a device that uses the piezoelectric effect, it is basically a device which converts voltage to vibration and vibration to voltage. It normally comes in handy to measure knock (knock sensor) or vibration (vibration sensor). Specifications Of 27mm Piezoelectric Transducer Sensor : Outside Plate Diameter: 27mm (1. 06 inches) Element Diameter: 20mm (. 79 inches) Plate Thickness: ~0. 5mm (. 02 inches)