Features Universal: Universal passive buzzer with 16 ohm resistance. Working Principle: The driving method and working principle are the same as ordinary speakers. Passive buzzer refers to the need for audio drive signal to sound, corresponding to active buzzer. Advanced Material: The passive buzzer is made of high-quality materials, the shell is strong, can well protect the internal structure, wear-resistant, not easy to deform, and has a long service life. Professional Craftsmanship: This electronic buzzer is manufactured with professional craftsmanship, in line with international manufacturing standards, and is very good in all aspects of work and stability. Intimate Service: We provide 15-day worry-free return and exchange service for all customers. If you have any questions about our passive buzzers, you are welcome to contact us and we will serve you wholeheartedly. Specification: Item Type:Electromagnetic Buzzer Resistance: 16ohm Voltage: 3V 5V 9V 12V AC 2KHz Package List: 50 x Buzzer Package List