SVM12N: Velleman : 12V DC Single Tone Mechanical Buzzer with 4.7 Inch Wires : Electromechanical

RVFM Round Electronic Buzzers with 20cm Flying Leads

ePathChina 7 Tone Sound Loud Car Siren Vehicle Horn Hooter/Ambulance/Siren/Traffic Sound with Black Remote Controller 12V 100W : Electronics

Velleman SVM06N 4-8V DC Mechanical Buzzer with Leads —

Buzzer with continuous or intermittent sound 12VDC - Cablematic

Velleman MK171 Voice Changer : Electronics

Mechanical Buzzer 12V DC

Waterproof and Advanced {Acoustic Components}

Maxmoral 1-Pack DC 12V 120dB Piezo Electronic Buzzer Alarm Horn Wired Siren for Home Security Alarm System : Electronics

DC 3-24V Buzzer, 12V Piezo Electronic Alarm Buzzer Continuous Sound Beep, Cable Length 100mm : Electronics

Waterproof and Advanced {Acoustic Components}