Twopiece piezo electronic buzzer alarm set, designed to produce a continuous audible tone when powered by 324V DC. Simple, reliable, and suited for physics circuits and general electronics projects. Key benefits Wide voltage compatibility: operates across a broad DC range from 3 to 24V, reducing the need for multiple buzzer types. Continuous sound output: provides a steady tone while power is applied, making it ideal for alarms and steadystate indicators. Ready for integration: two identical units let you test multiple circuits or provide redundant alerts without additional purchases. Simple operation: apply DC power and the buzzer emits sound, simplifying setup for experiments and prototypes. Versatile compatibility: works with common DC power supplies, battery sources, and electronic control circuits. Main features and attributes Function: piezo electric sounder that produces continuous sound when powered with DC voltage in the 3 to 24V range. Quantity: supplied as a set of two identical buzzer alarms. Compatibility: suitable for physics circuit experiments, hobby electronics, and prototype alerts; compatible with typical microcontroller driven circuits and general DC systems. Performance: consistent continuous tone across the specified voltage range for reliable audible indication. Form factor: compact and practical for use in bench experiments and small projects. Typical use scenarios Classroom and lab experiments: use as an audible indicator in physics demonstrations and student circuit exercises where a clear continuous tone is needed. Electronics prototyping: add audible feedback to breadboard circuits, sensor prototypes, or control panels during development and testing. Simple alarm or alert systems: integrate into DIY projects to signal events such as door open, low resource condition, or process completion with a steady tone. What you receive Two piezo electronic buzzer alarms rated for 3 to 24V DC, designed to provide continuous sound for physics circuits and general electronics applications. Usage tips Verify your supply voltage falls within the 3 to 24V DC range before connecting. Observe correct polarity and safe wiring practices when integrating into circuits. Use multiple units to create multipoint alerts or to compare response in experiment setups. This product is intended for educational, hobby, and prototyping use where a continuous audible signal is required within the specified voltage range.