بازر پیزوالکتریک پسیو 4 کیلو هرتزی

1407 Passive Piezoelectric Buzzer package contains of 1407 passive piezoelectric buzzers with 14mm x 7mm size, so it's known as compact size and lightweight device. It is a low-power AC passive piezoelectric buzzer with a high-temperature external case that sounds around the audible 4kHz range. It can be driven directly from a 3v to 5V Arduino or microcontroller, to generate a simple melody. The buzzer leads are terminated with a male pin. By applying a DC voltage, It can't generate any sound. This passive buzzer requires a square wave (PWM) signal to make a sound or to play melodies. The frequency of this PWM signal will determine its sound tone