# Speaker Buzzer 3-24V, 100dB

> Piezo buzzer SFM-27-W for warnings and signaling in electronic projects and industrial applications. Power supply 3-24V DC, continuous sound up to 100dB at 12V/30cm, diameter 3cm, current consumption approximately 15mA at 12V, resonance frequency 2.5±0.5KHz. Operating temperature -20...+45C.

- Page: https://sigmanortec.ro/en/speaker-buzzer-3-24v-100db
- Price: 4.19 RON
- Availability: In stock; 1-2 zile
- Reference: 33163 · EAN: 5942941745624
- Category: Mechatronics and IoT > Sensors and Modules > Audio and Sound > Buzzers and Alarms
- Specifications: Supply Voltage: 3; Maximum Input Voltage: 24; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.006 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:45 (Europe/Bucharest)

## Description

Piezo buzzer for warnings and signaling in electronic projects and industrial applications, operates on 3-24V DC with strong continuous sound of up to 100dB at 12V, has a compact diameter of 3cm for easy integration, low consumption of approximately 15mA at 12V and a resonant frequency of 2.5kHz for a clear signal, usable between -20 and +45C.
Piezo buzzer ideal for warnings, 3-24V, continuous sound, SFM-27-W.
Diameter: 3cm
Supply voltage: 3-24VDC
Supply current: 15mA at 12VDC
Sound intensity: 100dB at 12VDC /30cm
Resonant frequency: 2.5±0.5KHZ
Operating temperature: -20+45℃