I don't think those are 12 volt buzzers. At 12V they scream and distort as if clipped. They draw over 70mA, which I think is a lot. My other buzzers from another manufacturer have almost no ringing at 12V. They also operate on 1V, which is unusual for a 12V device. At 5 volts they work perfectly. If you need a 5 volt buzzer they might work.
USB Rechargeable Waterproof 130 DB Security Panic Button Siren Whistle With LED Light Self Defense Personal Alarm Keychain For Women Safety Sound Alert Device Key Chain By WETEN (White)
16 Review
Self Defense Personal Alarm Keychain For Women β USB Rechargeable Waterproof 130 DB Security Panic Button Siren Whistle With LED Light β Safety Sound Alert Device Key Chain By WETEN (Blue)
20 Review
2 Pack 130 DB Rechargeable Self Defense Keychain Alarm - Emergency Personal Siren With LED Light For Women, Kids, Elderly & Joggers By WETEN (Black&White)
12 Review
Rechargeable 130 DB Emergency Personal Alarm Keychain With LED Light - SOS Safety Alert Device For Women, Kids, Elderly & Joggers By WETEN (Blue)
20 Review
Dingsun SVideo To HDMI Converter: 3RCA AV Support 1080P/720P Compatible With WII U, PS2/PS3, STB, Xbox & More!
43 Review
HUANUO Adjustable Laptop Stand Riser For Desk - Fits Up To 15.6 Inch Notebook, Mesh Ventilated Cooling With 8 Tilt Levels For Improved Airflow & Ergonomics
29 Review
Enhance Your Network Connection With Dingsun RJ45 Coupler - Compatible With Cat5, Cat5E, Cat6, And Cat7 Ethernet Cables (Black 10 Pcs)
35 Review
Fitbit Versa 3 Smartwatch Replacement Band: TOYOUTHS Elastic Nylon Fabric Strap For Women & Men
50 Review