DC 3-24V 90DB Continuous Beep Alarm Electronic Buzzer Sounder AUD,R35

Description

This is a Small Continuous Sound Electronic Active Buzzer. It is great to add Audio Alert to your electronic designs. It operates on a DC 3-24V supply, uses a coil element to generate an audible tone.

 

•  Model No. : SFM-27;
•  Sound-making Type : Continuous Sound;
•  Alarm Height: 15mm
•  Alarm Diameter: 29mm
• Alarm Height: 15mm
• 2 Mounting Holes distance: 40mm
• 2 Wires length: 105mm
• Rated Voltage: 12V
• Operating Voltage: 3-24V
• Rated Current(MAX): 20mA
• Min Sound Output at 10 cm: 95 DB
• Resonant Frequency: 3100±500
• Operating Temperature: -20 to +80 (Degrees Celsius)
• Color: White

Getting started with the DC 3-24V 90DB Continuous Beep Alarm Electronic Buzzer Sounder

The following sketch shows how to switch the buzzer on and off. Arduino pin number 8 is used to control the buzzer, but any digital output pin can be used by changing the pin number at the top of the sketch.

Hardware required

• Arduino uno
• Breadboard
• Buzzer
• 100 Ohm resistor

Connecting the Hardware

 

Upload the following code

#define BUZZER_PIN 10

void setup() {
pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
// pulse the buzzer on for a short time
digitalWrite(BUZZER_PIN, HIGH);
delay(100);
digitalWrite(BUZZER_PIN, LOW);
delay(2000);
}

Testing the circuit

In the sketch the buzzer is pulsed on for a short duration (2000ms) and then switched off for 2 seconds (or 2000ms). This produces a short sharp periodic beep.

Package includes:
1×DC 3-24V 90DB Continuous Active Buzzer