HC12G-04B-G Passive Buzzer for 1-3V Systems

Introducing the HC12G-04B-G, a high-quality passive buzzer designed specifically for 1V–3V DC systems. This buzzer is capable of producing a clear 2731 Hz tone when driven with a square wave signal. Ideal for both electronics engineers and hobbyists, it's perfect for applications involving Arduino, Raspberry Pi, and other microcontrollers.

? Technical Specifications

• Dimensions: Ø12 x 7.5 mm
• Rated Voltage: 1.5 V
• Operating Voltage: 1 ~ 3 V
• Rated Frequency: 2731 Hz
• Rated Current: <= 70 mA
• SPL (Sound Pressure Level) at 10cm: >= 88 dB

? Usage Note

The HC12G-04B-G is a passive buzzer, which means it requires a square wave signal for operation. This signal can be generated using PWM from an Arduino or a similar microcontroller.

Arduino Code Sample:

Here is a simple Arduino code sample for driving the buzzer:  #define buzzerPin 9void setup() {   pinMode(buzzerPin, OUTPUT); }void loop() {   tone(buzzerPin, 4000);  // 4 kHz frequency   delay(500);   noTone(buzzerPin);   delay(500); } ? Passive vs Active Buzzer

• Passive Buzzer: Requires a square wave signal for operation, typically generated by a microcontroller's PWM.
• Active Buzzer: Contains a built-in oscillator and operates with direct DC power.

Whether you're working on a complex electronics project or just experimenting with modules and components, the HC12G-04B-G passive buzzer is a reliable and efficient choice.