# Alarm siren 12V, 120dB

> Alarm siren powered at 12VDC, with a sound level of 120dB, intended for anti-burglary systems. The sound frequency is 3.8kHz +-10%, with a transmission rate of 3Hz for a distinct signal. It has a diameter of 54mm and a height of 48mm, a compact format easy to integrate into security projects.

- Page: https://sigmanortec.ro/en/alarm-siren-12v-120db
- Price: 20.09 RON
- Availability: In stock; 1-2 zile
- Reference: 33451 · EAN: 5949481699585
- Category: Mechatronics and IoT > Sensors and Modules > Audio and Sound > Buzzers and Alarms
- Specifications: Input Voltage: 12 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.059 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 03:25 (Europe/Bucharest)

## Description

Siren module for burglar alarm systems, provides a loud 120dB sound warning to be heard clearly from a distance. Operates on 12VDC power supply, emits at 3.8 kHz for a penetrating sound, has a transmission speed of 3 Hz for a distinct signal. Compact format, diameter 54 mm and height 48 mm, easy to integrate into security projects.
The siren mode used for alarms, thanks to the strong sound of 120dB, can be heard clearly from a distance and can be used in anti-burglary systems.
Specifications:
Supply voltage: 12VDC
Sound index: 120dB
Sound frequency: 3.8KH2 + 10%
Transmission speed: 3H2
Diameter: 54mm
Height: 48mm