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buzzer and electric bell

Buzzer is used in machine tools and mechanical equipment, it is used to warn the operation status of the equipment.

Narrow Your Results:12v buzzer6v buzzer220 buzzer220vac buzzerbuzzer 24v12v adjustable volume buzzer24v alarm buzzerbuzzer 12v ac12v buzzer with strobe110v buzzer


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Parameters: Buzzer|22mm|Intermittence|AC220V|Black|Plastic|circular|Screw terminal


US $3.25 /Piece

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Parameters: Buzzer|30mm|Intermittence|AC220V|White|Plastic|Round+Square|Screw terminal


US $5.17 /Piece

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Total0 EA, Total amountUS $0.00
About product and suppliers: offers 2 buzzer and electric bell products, About 100% of these are Buzzer.

These products have different characteristics and advantages. A wide variety of buzzer and electric bell options are available to you.

At present, you choose buzzer and electric bell. You can contact us directly to buy. As well as ask for free samples, paid samples

buzzer and electric bell products are most popular in Southeast Asia, South America, North Africa, and East Asia.

These products have obtained certified, such as CE, UL, TUV, CB, RoSH, CCC certification to ensure the product safety.

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  • AD16-16MJ/A22



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    Buzzer|16mm|Intermittence|AC/DC12V|Black|Plastic|Rectangle|Screw terminal

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    Buzzer|16mm|Intermittence|AC/DC24V|Black|Plastic|Rectangle|Screw terminal

  • AD16-16MJ/A24



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    Buzzer|16mm|Intermittence|AC/DC36V|Black|Plastic|Rectangle|Screw terminal

  • AD16-16MJ/A25



    US $5.73 /Piece

    Buzzer|16mm|Intermittence|AC/DC48V|Black|Plastic|Rectangle|Screw terminal

  • AD16-16MJ/B21



    US $5.73 /Piece

    Buzzer|16mm|Continuous|AC/DC6V|Black|Plastic|Rectangle|Screw terminal


1. Why is a buzzer used in a circuit?

A buzzer is an audio signal device, which may be mechanical, electromechanical, or piezoelectric (piezo for short). Typical uses of buzzers in the industry is as an alarm devices, which makes a buzzing or beeping noise while need buzzing.

2. What is a piezoelectric buzzer?

A piezoelectric buzzer, which is a flat piece of piezoelectric material with two electrodes. This type of buzzer requires some kind of oscillator (or something more complicated like a microcontroller) to drive it, if you apply a DC voltage you will just get a click. They are used in places where you need something that emits an audible tone, but don’t care about high-fidelity sound reproduction, like microwave ovens, smoke alarms, and electronic toys.

3. How do you make a buzzer?

You need electronic knowledge and prepare some raw materials in advance. The working principle of buzzer is the vibrating disk in a magnetic buzzer is attracted to the pole by the magnetic field. When an oscillating signal is moved through the coil, it produces a fluctuating magnetic field which vibrates the disk at a frequency equal to that of the drive signal.

4. Does buzzer have polarity?

A buzzer has Positive and Negative Polarity. As for active buzzers which have positive and negative polarity, they can make sound when voltage signal is effected on the pin feet. However, active buzzers are with single tone and constant frequency.