4 Pcs Piezo Electronic Buzzer 3-24V Tone Active Alarm Electronic Buzzer Alarm Sounder with Wire Leads 100mm for Physics Circuits Continuous Sound

RATIONAL DESIGN： Buzzer is an electronic sounder with integration structure. Using DC power, connected to rated power and the buzzer will sound continuously. 【CORE COMPOSITION】- Piezoelectric buzzer is mainly made up by multivibrator, piezoelectric buzzer chip, impedance matching unit, resonator and shell. 【PRODUCT PRINCIPLE】- Multivibrator is composed of transistors or integrated circuits. When switched on, multivibrator vibrates and outputs audio signal. 【EASY TO CONTROLL 】- Impedance matcher drives piezoelectric buzzer sound. Can be controlled conveniently. 【 APPLY TO】- The active buzzer is widely used on computers, printers, photocopiers, alarm, electronic toys, automotive electronic equipment, telephone, timer and other electronic products., Manufacturer: Dolaso