27mm Piezoelectric Ceramic Buzzer with Cable Soldered

The 27mm Piezoelectric Ceramic Buzzer generates sound by applying an alternating voltage (a signal that switches polarity rapidly) to a piezo ceramic disc (a ceramic plate that physically flexes with each voltage cycle). The piezo ceramic buzzer produces its rated tone at 10kHz with a sound pressure level of 85dB — about as loud as a ringing phone at arm’s length. The cable comes pre-soldered, so there is no assembly needed before connecting to a circuit.

The 27mm piezoelectric disc works as both a buzzer and a passive vibration sensor depending on how it is wired. The honest limitation is that it needs an external oscillator or PWM signal from microcontroller to produce a sustained tone. Without a driven signal, it only clicks once per voltage pulse. It operates safely between minus 20°C and 70°C. Students, and lab makers all use it. StemVolt provides with trusted quality, ensuring reliable performance and easy usability.

Related Products: 

• Lets Explore the Force, Flex and Load Sensor Category

Features:

• Sound pressure level of 85dB at rated frequency is audible across a small room.
• Temperature range from minus 20°C to 70°C covers indoor and mild outdoor deployment conditions.
• piezoelectric disc pre-soldered cable mounting eliminates bare wire ends and speeds up prototyping wiring connections.

Technical specifications:

Applications:

• Alarm clock project uses this buzzer to sound a 10kHz alert at the set time.
• Knock sensor project wires this disc as a vibration input to detect table taps or impacts.
• 27mm Piezoelectric Ceramic Buzzer sounds an 85dB alarm when a door contact sensor opens unexpectedly.
• piezoelectric plate detects surface vibration in a structural monitoring project and triggers a digital output pin.

Package includes:

• 1 x 27mm Piezoelectric Ceramic Buzzer