20PCS Passive Electromagnetic Buzzer 2KHz 3V 5V 12V 16Ω
20PCS Passive Electromagnetic Buzzer 2KHz 3V 5V 12V 16Ω
NioCen 20PCS Passive Electromagnetic Buzzer – 2KHz, 3V/5V/12V, 16Ω Impedance
Upgrade your electronics projects with this pack of 20 passive electromagnetic buzzers from NioCen. Designed for broad compatibility, these buzzers operate at 2KHz with a general impedance of 16 ohms and support multiple voltage inputs — 3V, 5V, and 12V — making them ideal for microcontroller projects, Arduino builds, alarm circuits, and communication applications.
Whether you're a hobbyist, engineer, or educator, having 20 units on hand ensures you always have a reliable buzzer ready for prototyping, testing, or production runs.
Key Features
- Passive Electromagnetic Design: Requires an external signal (PWM or AC) to produce sound — giving you full control over tone and frequency
- Operating Frequency: 2KHz for a clear, audible alert tone
- Wide Voltage Range: Compatible with 3V, 5V, and 12V power supplies
- 16Ω Impedance: General-purpose impedance suitable for a wide range of circuit applications
- Bulk Pack of 20: Great value for prototyping, workshops, classrooms, and production use
- Condition: Brand new components
- High-Concern Chemicals: None
Ideal Applications
- Arduino and Raspberry Pi projects
- Alarm and alert systems
- Communication devices
- Electronic toys and educational kits
- DIY electronics and circuit prototyping
Made in Mainland China.
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Frequently Asked Questions
Q: What is the difference between a passive and active buzzer?
A: A passive electromagnetic buzzer requires an external oscillating signal (such as a PWM signal from a microcontroller) to produce sound, allowing you to control the frequency and tone. An active buzzer has a built-in oscillator and produces a fixed tone when powered. These NioCen buzzers are passive, giving you greater flexibility in your circuit design.
Q: Are these buzzers compatible with Arduino and Raspberry Pi?
A: Yes! Because they support 3V and 5V operation, these passive electromagnetic buzzers are fully compatible with Arduino, Raspberry Pi, and most common microcontroller development boards. Simply drive them with a PWM signal from your output pin.
Q: Why buy a pack of 20 passive buzzers?
A: Having a bulk pack of 20 ensures you have spares for prototyping, can outfit multiple projects simultaneously, and reduces the need for frequent reordering. This is especially useful for educators, workshop facilitators, and electronics enthusiasts working on multiple builds at once.