Funduino Buzzer 5v Sounder
This is a small 12mm round buzzer that operates around the audible 2kHz range. You can drove it directly from 5V to generate the tones using a microcontroller like an Arduino. Use buzzers to create simple music or user interfaces.
Piezo Element 35mm Bestar FT-35T-2.6A1
Piezo elements come in handy when you need to detect vibration or a knock. You can use these for tap or knock sensors pretty easily by reading the voltage on the output. They can also be used for a very small audio transducer such as a buzzer.
Miniature Speaker Visaton K50 - 8 Ohm - 2W - 5cm (2")
5 cm (2") miniature speaker with plastic diaphragm and metal basket. Thanks to its compact dimensions, suitable for signal output in machines and other equipment where space is at a premium.
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