35mm Piezo Electric Sensor 72mm Green Paper Adhesive Tape 5 TOUCH - Active Low

5 TOUCH - Active Low output when there is a touch on the sensor by a finger

7 ohm Color Code Red

2V Type Common Cathode Red Colour Wavelength (nm) 620-625 nm Green Colour Wavelength (nm) 520-525 nm Forward Current (IF) 20mA Diameter 3 mm  Lens colour Clear

anything below 1

650V  Drain-Current Continous 34A

35mm Piezo Electric Sensor 72mm Green Paper Adhesive Tape 5 TOUCH - Active LowA piezoelectric sensor or element is a device that uses the piezoelectric effect to convert voltage to vibration and vibration to voltage. This is a piezoelectric disc that picks up sound from musical instruments and other devices. Because it produces analogue output, you can connect it to a comparator circuit to produce digital output, or you can connect it directly to the microcontroller you're using. It is small and reliable enough to handle rough