HALJIA 2Pcs DC 3-24V High-Decibel SFM-20B Piezo Buzzer Electronic Tone Buzzer 2312 Alarm Continuous Sound Cable Length 120mm Electronic Sounder

• Piezoelectric buzzer is mainly made up by multivibrator, piezoelectric buzzer chip, impedance matching unit, resonator and shell.
• Multivibrator is composed of transistors or integrated circuits. When switched on, multivibrator vibrates and outputs audio signal.
• Impedance matcher drives piezoelectric buzzer sound.
• Connected to rated power and the buzzer will sound continuously.
• Can be controlled conveniently.

Feature: Buzzer is an electronic sounder with integration structure. Using DC power, it is widely used on computers, printers, photocopiers, alarm, electronic toys, automotive electronic equipment, telephone, timer and other electronic products. Piezoelectric buzzer is mainly made up by multivibrator, piezoelectric buzzer chip, impedance matching unit, resonator and shell. Multivibrator is composed of transistors or integrated circuits. When switched on, multivibrator vibrates and outputs audio signal. Impedance matcher drives piezoelectric buzzer sound. Connected to rated power and the buzzer will sound continuously. Can be controlled conveniently. Specifications: Model: 2312 Color: Black Diameter: 23mm Height: 11mm Cable Length: 120mm Sound Pressure Level: 85 to 95 decibels Rated Voltage: 12V DC Working Voltage Range: 3V-24V Max Current: 10mA Weight: 3.9g Packing List: 2 x Active Electronic Alarm Buzzer