Create great loud alarms with these active continuous sound buzzers from PMD Way. Use the options menu to select pack size. Specifications: Operating voltage: 8~15V DC Operating current: 25mA at 12V DC Min. Sound Pressure Level: 75dB @ 12VDC/20cm Resonant Frequency: 400 +/-100Hz Operating Temperature: -20 to 60 degrees C Size: 32 x 12 x 9mm Don't forget to check out our full range of speaker and related products if this doesn't meet your needs. And as always, all orders receive free delivery. And remember ... if you: can't find what you need not sure what to order want a bulk deal need technical support or just want to have a talk ... Please email us via [email protected]. To keep up to date with new products, news, tutorials and more - we're on x, Facebook, Instagram, threads, reddit, and instructables.