Stemedu 5 PCS DC 6-15V Electronic Buzzer Alarm Siren – 12V Active Buzzer Sounder – Continuous Beep Piezo Buzzers – 110dB High-Decibel

Price: $16.99
(as of Feb 19, 2023 03:36:47 UTC – Details)

Product Description

100% Brand New and High Quality

Shape: Squre

Color: Black

It is an active buzzer, usually used in car / safe box anti-theft burglar alarm. The mini high decibel piezo alarm can reach 110dB at 12V DC.

Rated Voltage: 12VDC

Operating Voltage: 6-15VDC

Current Rating @ 12VDC: ≤ 80mA

Power: 10W

SPL: 110dB @ 30cm / 12VDC

Piezo Frequency: 2.3 – 4.3 kHz

Siren Tone: Warble

Voice coil DC impedance: 6±0.5Ω

Working temperature: -20℃～+60℃ Continuous working time: ≥120 Min (at 12V DC)

Output sound pressure: 110±3dB/m (at 12VDC/platform test/30m³ space)

Dimensions: 47mm x 39mm x 23.5mm (1.83in x 1.54in x 0.93in)

Description

The buzzer is a kind of electronic buzzer with integrated structure. It uses DC voltage to supply power.

It is widely used in computers, printers, copiers, alarms, electronic toys, automotive electronic equipment, telephones, timers and other electronic products as sound devices.

Classification of buzzers Buzzers are mainly divided into two types: piezoelectric buzzer and electromagnetic buzzer.

This is a piezoelectric buzzer.

Package included:

5 X Piezoelectric buzzer active alarm sounder

The structure principle of the buzzer

1. Piezoelectric buzzer

The piezoelectric buzzer is mainly composed of a multivibrator, a piezoelectric buzzer, an impedance matcher, a resonance box, and a shell. Some piezoelectric buzzers are also equipped with light-emitting diodes.

The multivibrator is composed of transistors or integrated circuits. When the power is turned on (1.5~15V DC working voltage), the multivibrator starts to vibrate and outputs 1.5~2.5kHZ audio signals, and the impedance matcher drives the piezoelectric buzzer to sound.

The piezoelectric buzzer is made of lead zirconate titanate or lead magnesium niobate piezoelectric ceramic material. Silver electrodes are plated on both sides of the ceramic sheet, and after polarization and aging treatment, they are then glued together with the brass sheet or the stainless steel sheet.

2. Electromagnetic buzzer

The electromagnetic buzzer is composed of oscillator, electromagnetic coil, magnet, vibrating diaphragm and shell. After the power is turned on, the audio signal current generated by the oscillator passes through the electromagnetic coil, causing the electromagnetic coil to generate a magnetic field. The vibrating diaphragm periodically vibrates and produces sound under the interaction of the electromagnetic coil and the magnet.

Operating Voltage
AC380V DC220V DC 3-24V DC 3-24V DC 4.5-20V DC 2.7-12V DC 4.8-20V

Rated Voltage
12V 12V

Current Rating
15mA @ 12VDC 10mA

Decibel
100dB @12VDC / 30cm 95dB

Package Included
4PCS LXW5-11N1 Micro Switch 5PCS Active Buzzer 6PCS Active Buzzer 5PCS HC-SR505 Motion Sensor 5PCS HC-SR312 Motion Sensor 5PCS HC-SR501 Motion Sensor

Name
Stemedu Capacitive Analog Soil Moisture Sensor DHT11 Digital Temperature and Humidity Sensor Module DHT22 AM2302 Digital Temperature and Humidity Sensor Module

🚩 This piezoelectric alarm siren is an active buzzer
🚩 Rated voltage is 12V DC, operating voltage is 6-15V DC.
🚩 110dB high decibel sounder module, usually used in car / safe box, or used as sound devices on small electronic products such as music greeting cards, electronic doorbells and electronic toys.
🚩 Dimensions: 47mm x 39mm x 23.5mm (1.83in x 1.54in x 0.93in)
🚩 If any question, how to contact us? Please click “Stemedu”(you can find “Sold by Stemedu” under Buy Now button), in the new page, click “Ask a question” to email us