2Pcs DC 3-24V HYD-4216 Continous Beep Piezo Active Electronic Buzzer
£3.24Product Name : Active Electronic Alarm Buzzer;Model : HYD-4216
Working Voltage : DC 3-24V;Body Size : 42 x 15mm / 1.6″ x 0.6″ (D*T)
Cable Length : 10cm / 3.9″;External Material : Plastic