5Pcs Passive Buzzer Module, 3.35V 3pin Low Level Trigger Alarm Sound Control Module Short summary A compact set of five passive buzzer modules designed for 3.3 to 5V systems. Each module uses a 3pin interface and a low level trigger input to produce audible tones when driven by a microcontroller or alarm circuit. Key benefits Ready to integrate: modules come assembled on small PCBs with standard 3pin connections for quick hookup to breadboards and control boards. Flexible voltage range: works reliably across 3.35V systems so it is compatible with common microcontrollers and single board computers. Low level trigger behavior: activates when the input is pulled low, allowing simple logic control and easy wiring in activelow alarm circuits. Passive design for custom tones: being a passive buzzer it responds to input frequency, enabling custom melodies or variable tones when driven by PWM or frequency output. Pack of five: multiple modules included for simultaneous alerts, multizone projects, or spare parts for prototyping and . Features and attributes Function: audible alert generator that requires a driven signal to produce tones; low level trigger input activates the module. Interface: 3pin layout commonly labeled VCC, GND, IN for power and input control. Operating voltage: 3.35V. Type: passive buzzer module suitable for frequency driven tone generation. Construction: PCBmounted buzzer assembly designed for reliable electrical connections and easy mounting in prototypes. Performance: produces clear audible tones when driven with appropriate frequency signals; suitable for short to medium range alerting in indoor environments. Compatibility Compatible with 3.3V and 5V logic systems. Works with microcontrollers and single board computers that can provide PWM or digital outputs such as Arduino models, ESP series, and Raspberry Pi GPIO pins. Can be integrated into alarm panels, control boards, and sensor circuits that accept a low level trigger. Typical applications Security and alarm systems: connect to sensor outputs or alarm controllers to provide audible warnings when a trigger condition occurs. Electronics prototyping and education: use multiple modules for learning exercises, sound experiments, and demonstration projects that require tone generation. Robotics and automation: add audible feedback for status alerts, error signals, or user prompts in robotic systems and automated equipment. Basic usage tips Connect VCC to 3.3 to 5V supply, GND to system ground, and IN to the control signal. The module triggers when IN is driven low. To generate melodies or variable tones, drive the IN pin with a PWM or frequency output from a microcontroller. As a passive buzzer it does not produce tone by simply applying DC; it needs a changing signal to sound. Use currentlimited outputs or appropriate driver circuits if required by your controller to prevent overloading GPIO pins. What this product solves Eliminates the need to assemble discrete buzzer elements and wiring for simple alerting functions. Provides a reusable, compact sound module that lets you focus on control logic and tone programming. Offers consistent low level trigger behavior for integration into existing activelow alarm architectures. Package contents Five passive buzzer modules, 3.35V, 3pin low level trigger. This module is intended for electronics and prototyping use only.