DC Mechanical Vibrating Buzzer 3V Active Sound & Tactile Module 2315

Specifications

• Operating Voltage: 3V DC
• Operating Current: 30mA
• Component Type: Mechanical Vibrating Buzzer (Active)
• Sound Output Type: Continuous mechanical buzz
• Feedback Type: Dual (Auditory sound + Tactile vibration)
• Dimensions (L × W): 23mm × 15mm
• Terminal Type: Bare wire leads 
• Compatible Platforms: Arduino, ESP32, STM32, Raspberry Pi (can be driven directly or via a basic NPN transistor)

Minimum hardware to get started:

• Development board (Arduino Uno, ESP32, or similar) : to send the trigger signal to activate the buzzer. 
• 3V Power Source : to provide the optimal operating voltage for the mechanical vibration.
• NPN Transistor (e.g., 2N2222) & 1kΩ Resistor : to safely switch the buzzer's power; mechanical buzzers draw more current than standard piezos and can overload a standard microcontroller GPIO pin if driven directly.
• Jumper Wires : to connect the buzzer, transistor, and board together.

Safety Warnings:

• Inductive Load Warning: Because this buzzer contains a mechanical coil/motor mechanism, it can create inductive spikes and draw sudden bursts of current. Do NOT drive this directly from a 3.3V microcontroller (like an ESP32 or Raspberry Pi) GPIO pin. Always use a basic NPN transistor or MOSFET as a switch.
• Voltage Limits: Do not exceed 3.3V. Powering this continuously from a 5V source can burn out the internal mechanical coil.
   

Accessories:

Included in the Box:

• 1× 2315 DC Mechanical Vibrating Buzzer 3V

Frequently Asked Questions(FAQs)

• Is the 2315 Mechanical Vibrating Buzzer compatible with Arduino?
  Yes, it is fully compatible with Arduino, but you should use a transistor to switch the power instead of driving it directly from a digital pin.
• Can I use this buzzer with an ESP32 or Raspberry Pi?
  Yes, but because those boards operate at 3.3V and have strict current limits, using a transistor switching circuit is mandatory to protect your GPIO pins.
• Does this buzzer require a PWM signal to produce sound?
  No, this is an active mechanical buzzer that only requires a steady DC voltage to operate.
• Can I use multiple vibrating buzzers on the same microcontroller?
  Yes, as long as each buzzer is switched by its own transistor and your power supply can handle the combined current draw.
• What voltage does the 2315 Mechanical Vibrating Buzzer require?
  This buzzer is designed to operate optimally at 3V DC.
• Can I power this buzzer directly from a 5V pin?
  It is not recommended to run it continuously at 5V, as the higher voltage can overheat and damage the internal mechanical coil over time.
• How much current does this buzzer draw?
  It draws approximately 30mA during operation, which is why it is safer to switch it via a transistor rather than drawing directly from a microcontroller pin.
• How do I connect the buzzer to my circuit?
  Connect the positive lead to your 3V power source, and route the negative lead through an NPN transistor to ground, using your microcontroller to switch the transistor.
• Does polarity matter when wiring this buzzer?
  Yes, because it is an active mechanical component, you must connect the positive and negative terminals correctly for it to function.
• Do I need a resistor with this buzzer?
  You do not need a resistor in series with the buzzer itself, but you must use a 1kΩ resistor on the base pin of your switching transistor.
• Which Arduino library should I use for this buzzer?
  You do not need any special libraries standard digitalWrite() commands are all you need to turn the buzzer on and off.
• Can I change the tone or pitch of the sound?
  No, because it is a mechanical buzzer, the tone is fixed by its physical construction.
• Where can I find example code to pulse the buzzer?
  You can use the standard Arduino "Blink" example to turn the buzzer on and off in intervals by simply changing the output pin variable.