This is an electronic piezo buzzer (audio indicator) with a built-in drive circuit and red and black wire leads. It runs on 3–9 V DC, draws no more than 7 mA, and produces at least 85 dB at 9 V measured at 30 cm. It measures about 1.1 x 0.7 in.
Key Features
- Built-in drive circuitry: only DC voltage needed
- Operating voltage 3–9 V DC
- 85 dB minimum at 9 V DC / 30 cm
- Low current: 7 mA max
- Red and black wire leads
- Compact: about 1.1 x 0.7 in
Specifications
| Type | Piezo audio indicator, built-in driver |
|---|---|
| Operating voltage | 3–9 V DC |
| Current | 7 mA max |
| Sound pressure | 85 dB min at 9 V DC / 30 cm |
| Leads | Red and black wire |
| Dimensions | Approx 1.1 x 0.7 in |
| Quantity | 1 |
| SKU | 26BZ04 |
What's Included
- 1 x piezo buzzer with wire leads
Ideal For
Battery-powered alarms and indicators, including 9 V battery projects.
Frequently Asked Questions
What is the difference between a piezo buzzer and a piezo transducer?
A buzzer like this has a drive circuit built in and sounds from plain DC. A bare transducer needs an external AC or square-wave signal.
Is it loud at lower voltage?
The 85 dB rating is at 9 V; output is typically lower at 3 V.