---
product_id: 440511967
title: "Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino"
brand: "stemedu"
price: "¥491"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/440511967-stemedu-5pcs-sfm-27-dc-3-24v-alarm-siren-electronic
store_origin: JP
region: Japan
---

# 3-24V wide voltage range Compact 29mm diameter size 95dB piercing continuous beep Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino

**Brand:** stemedu
**Price:** ¥491
**Availability:** ❌ Out of Stock

## Summary

> 🔔 Make your projects heard — loud, clear, and impossible to ignore!

## Quick Answers

- **What is this?** Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino by stemedu
- **How much does it cost?** ¥491 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/440511967-stemedu-5pcs-sfm-27-dc-3-24v-alarm-siren-electronic)

## Best For

- stemedu enthusiasts

## Why This Product

- Trusted stemedu brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready for Action:** Includes 5 buzzers so you’re always equipped for multiple projects or backups
- • **Compact Yet Mighty:** Sleek 29mm diameter fits effortlessly into any project or modification
- • **Piercing 95dB Alarm:** Cut through noise with a high-decibel continuous beep that demands attention
- • **Engineered for Durability:** Works reliably from -20°C to 45°C, built to perform in diverse environments
- • **Power Flexibility Unleashed:** Operates seamlessly from 3V up to 24V for ultimate DIY freedom

## Overview

The Stemedu 5PCS SFM-27 Active Piezo Buzzers deliver a powerful 95dB continuous alarm sound within a compact 29mm diameter design. Operating across a versatile 3-24V range, these buzzers are perfect for Arduino projects, car mods, and DIY alarms. Each pack includes five durable buzzers engineered to perform reliably in temperatures from -20°C to 45°C, ensuring your alerts never go unnoticed.

## Description

Specification: Rated Voltage: 12V Operating Voltage: 3-24V Rated current: 15MA at 12VDC Rated Current(MAX): 20mA Min Sound Output at 10 cm: 95 DB Resonant Frequency: 31001500 Acoustic piezoelectric frequency: 100dB at 12VDC/30cm Resonant frequency: 2.5±0.5KHZ Working temperature: -20~45 degree Storage temperature: -20~60 degree Alarm Diameter: 29mm/ 1.14" Alarm Height: 15mm/ 0.59" Mounting Holes distance: 40mm/ 1.57" Wires length: 105mm 14.13" Continuous Sound With Mounting Holes Package Included: 5 X 95DB Continuous Beep Alarm Siren

## Features

- Voltage range: Operating voltage 3-24V, rated voltage 12V
- Size: Alarm diameter 29mm/ 1.14", height 15mm/ 0.59"
- Sound level: Produces continuous high-decibel alarm sound up to 95dB
- Applications: Suitable for car modification, DIY electronics projects, and other sound alarm needs
- Package contents: Includes 5pcs 95DB black active buzzers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Voltage | 24 Volts |
| Control Method | Touch |
| Noise Level | 95 dB |
| Mounting Type | Wall Mount |
| Manufacturer | Stemedu |
| Item model number | ST3486X5 |
| Product Dimensions | 2.9 x 2.9 x 1.5 cm; 32 g |
| ASIN | B096P5K9W1 |

## Product Details

- **Colour:** Black
- **Brand:** Stemedu
- **Power Source:** Corded Electric
- **Compatible Devices:** Electronic Security Systems
- **Product Dimensions:** 29L x 29W x 15H Millimeters

## Images

![Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino - Image 1](https://m.media-amazon.com/images/I/61ohmr7xgtS.jpg)
![Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino - Image 2](https://m.media-amazon.com/images/I/51+9PaES88L.jpg)
![Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino - Image 3](https://m.media-amazon.com/images/I/41qsfksbdSS.jpg)
![Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino - Image 4](https://m.media-amazon.com/images/I/41eMVdxyw9S.jpg)
![Stemedu 5PCS SFM-27 DC 3-24V Alarm Siren Electronic Piezo Active Buzzer, 95dB High Decibel Continuous Beep Speaker for Arduino - Image 5](https://m.media-amazon.com/images/I/51OQlVTRXSL.jpg)

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**Shop now:** [https://www.desertcart.jp/products/440511967-stemedu-5pcs-sfm-27-dc-3-24v-alarm-siren-electronic](https://www.desertcart.jp/products/440511967-stemedu-5pcs-sfm-27-dc-3-24v-alarm-siren-electronic)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-25*