Purchase the KY-012 active buzzer module and the 5V low-current alarm sound sensor.

1.Buzzer category: mainly divided into two types: piezo buzzer and electromagnetic buzzer.
2.The circuit graphic symbol of the buzzer: the letter "H" or "Ha" is used in the buzzer circuit (the old standard uses "frequency modulation", "pound", "JD", etc.) to indicate.
Working voltage:3.5-5.5V
Working current:<25mA

We focus on three core product categories to meet diverse market demands:

 

1、Passive Components: We offer a comprehensive range of resistors, capacitors, inductors, and connectors, backed by stable stock and competitive pricing to support your continuous production needs.

 

2、Integrated Circuits (ICs) & Microcontrollers: Our portfolio features high-performance chips, including the ESP32 series, MCUs, and logic ICs. All components are sourced from authorized distributors to ensure guaranteed quality and authenticity.

 

3、PCB & PCBA Solutions: We provide complete supply chain support for printed circuit boards, ranging from prototype fabrication to mass production assembly, serving the IoT, consumer electronics, and industrial sectors.

 

4、Quality & Service Commitment
At Muren Technology, we prioritize authenticity and traceability. Every batch undergoes strict quality inspection with full lot traceability and customs declaration support. Whether you require samples, small-batch trials, or large-volume orders, our professional team ensures accurate delivery and long-term stable cooperation.