2piece DC 5V passive buzzer set, model FUET9045, designed for clear intermittent alarm and notification use. Each unit produces an 85 dB beep when driven by a pulsed 5V signal, making these buzzers a simple reliable solution for audible alerts in electronics and control systems. Key benefits Clear audible alerts: 85 dB output provides noticeable beeps for alarms, timers, and status notifications. Passive design for flexible tones: As passive buzzers, they produce sound when driven by an external square wave or microcontroller PWM, allowing custom beep patterns and intermittent signaling. Easy integration: Rated for DC 5V, compatible with common microcontrollers, control boards, alarm panels, and lowvoltage systems. Two units included: Pack of two makes them convenient for redundant alerts or multizone installations. Product highlights and attributes Function: Passive electronic buzzer and alarm beeper that requires an external drive signal to generate intermittent sound. Electrical compatibility: Operates at DC 5V; suitable for use with Arduino, Raspberry Pi GPIO outputs, PLCs, and other 5V control circuits. Performance: Sound pressure level approximately 85 dB under typical drive conditions, suitable for indoor notification and alerting. Form factor: Compact footprint suitable for integration into project enclosures and control panels; lightweight and easy to mount. Construction: Durable housing designed for general electronics applications and routine use. Model: FUET9045, sold as a set of two identical units. Typical applications DIY electronics and maker projects using microcontrollers to create custom alarm patterns or notifications. Small alarm systems and security panels where a reliable intermittent audible alert is required. Equipment status indicators, timers, vending machines, and industrial control panels that need a clear audible signal. What you get and basic wiring note Two passive buzzer units model FUET9045, DC 5V operation. Simple wiring: connect to a 5V supply and a driven output pin that provides a pulsed signal to produce intermittent beeps. Follow standard precautions for wiring and signal drive levels when integrating with controllers.