LON0167 10Pack Passive Electronic Buzzers 23 mm x 4 mm Black Key benefits Wide voltage compatibility: operates on DC 1 to 30 V for use in many power systems and control circuits. Clear audible alert: 80 dB output provides a reliable sound level for alarms and notifications. Compact footprint: 23 mm diameter and 4 mm thickness makes these buzzers easy to fit into small enclosures and crowded PCBs. Passive design for flexibility: passive buzzer requires an external drive signal, allowing you to control tone, volume, and patterns with PWM or oscillators. Bulk pack of 10: suitable for prototyping, repairs, or small production runs. What this product does These are passive electronic buzzers designed to produce an audible alarm when driven by an AC or pulsed DC signal. Because they are passive, they do not include an internal oscillator and must be driven by an external signal source. The compact black housing suits space constrained designs. Important attributes Model: LON0167 Quantity: 10 pieces Type: passive electronic buzzer Voltage: DC 1 to 30 V Sound level: 80 dB Size: 23 mm diameter x 4 mm thickness Color: black How it solves common problems Replaces bulky alarm modules with a low profile alternative for slim enclosures. Wide voltage range reduces the need for additional power conversion when integrating into different systems. Passive operation lets you tailor audible signals to specific alerts or user needs using the controller you already have. Practical applications Alarm panels and security indicators where compact, loud alerts are required. Embedded and microcontroller projects for custom tones and signal patterns. Industrial control boards and equipment indicators that need a small, output sounder. Usage notes Requires an external drive signal or PWM output to produce sound. Verify polarity and drive method in your circuit design to achieve the desired tone. This 10piece set provides consistent, compact buzzers suitable for a wide range of electronics and alerting applications.