> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Active Buzzer (5V)

**Type:** Product page · **SKU:** CE09882 · **Brand:** [Core Electronics](https://core-electronics.com.au/brands/core-electronics-australia)
**Page:** https://core-electronics.com.au/active-buzzer-5v.html ([markdown](https://core-electronics.com.au/active-buzzer-5v.html.md))

Apply a voltage and hear a tone! This active buzzer doesn't require any external circuitry like a passive buzzer.

## Pricing

- **Price:** $0.38 (inc GST) — $0.35 AUD, exc GST
- **Quantity discounts:** 5+ $0.34 (exc GST) · 15+ $0.33 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 96 today; more stock is typically available with a 8–12 day lead time.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE09882:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/CE09882:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

This 5V active piezo buzzer is an easy-to-use sound solution for your electronics projects. Inside is a tiny piezoelectric crystal that flexes when voltage is applied, generating sound. Unlike a passive buzzer, this active version includes a built-in oscillation circuit—so it can produce a steady tone automatically when powered. Simply apply 5V, and it will emit a clear, loud beep without any need for a PWM signal or frequency control from your microcontroller.

Perfect for adding audible alerts, alarms, or feedback to embedded systems, this buzzer is compact, reliable, and breadboard-friendly. Just connect the positive and ground pins to power, and you’re ready to go.

### Specifications

- **Operating voltage:** 5V DC
- **Sound type:** Continuous tone (built-in oscillator)
- **Diameter:** 11mm
- **Height:** 9mm
- **Lead length:** 5mm
- **Typical sound level:** ~85dB @ 10cm (approx.)
- **Mounting:** Breadboard or PCB compatible
- **Polarity:** Marked “+” for easy connection
 
### Usage Example

To make the buzzer sound, simply power it:

 ```

from machine import Pin
import utime

buzzer = Pin(7, Pin.OUT)

while True:
    buzzer.value(1)  # Turn buzzer ON
    utime.sleep(1)
    buzzer.value(0)  # Turn buzzer OFF
    utime.sleep(1)
  
```

This simple setup makes it ideal for notification tones or alarm indicators—no extra circuitry or signal generation required!

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/b/u/buzzer-showcase.jpg)