Features Features: 【The Passive Buzzer】 A passive buzzer means that an audio drive signal is required to make it sound, corresponding to an active buzzer. The buzzer has a resistance of 16 ohms, providing a clear and loud sound. 【Universal Compatibility】The passive buzzer is compatible with a variety of voltages, including 3V, 5V, 9V, and 12V, making it suitable for a wide range of electronic devices without needing specific voltage adjustments. 【Simple Working Principle】The working principle of the passive buzzer is the same as that of those of ordinary speakers, highly convenient to integrate into various electronic projects due to its straightforward mechanism.  【Strong and Durable Shell】The buzzer is designed with a high-strength, resilient casing that offers superior protection to its internal mechanisms, and extending its operational life span by preventing wear and tear. 【High-quality and Stable Performance】The buzzer is of high quality and offers stable performance, ensuring consistent and reliable operation in various applications, providing functional assurance under diverse operating conditions.   Specification: Item Type:Electromagnetic Buzzer Resistance: 16ohm Voltage: 3V 5V 9V 12V AC 2KHz Package List: 50 x Buzzer Package List