SKU: SENS-3149
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Generic Microphone 9×7mm (Pack of 3) - 50-20kHz, Low Noise

₹31.00 (Inclusive of all taxes)
Out of Stock

This compact 9×7mm electret condenser microphone module offers low-noise audio capture with a 50Hz to 20kHz frequency response, suitable for integration into voice-activated systems, portable recorders, and embedded electronics projects requiring clear audio input.

Features

  • Compact 9×7mm electret condenser microphone capsule
  • Wide frequency response range from 50Hz to 20kHz
  • Low noise and low power consumption design
  • Sensitivity of 56-58dB for clear audio signal capture
  • Pack of 3 units for multi-channel or prototyping applications

Out of stock

Description

The microphone is a standard electret condenser type, designed for reliable audio signal acquisition in consumer and industrial electronics. Its compact form factor allows for easy integration into space-constrained designs such as mobile devices, intercoms, and voice-activated toys.

Operating with low power consumption, it provides a stable analog output signal corresponding to the captured acoustic pressure waves. The sensitivity is calibrated to industry standards, ensuring consistent performance across multiple units and applications.

Key Features

  • Compact 9mm diameter by 7mm length form factor for versatile mounting.
  • Wide 50Hz to 20kHz frequency range suitable for voice and general audio capture.
  • Optimized low-noise circuitry for clear signal output with minimal interference.
  • Low current draw makes it ideal for battery-powered portable devices.
  • Standardized sensitivity of 56-58dB ensures predictable signal levels for amplification stages.
  • Multi-channel capable pack of three for stereo or array-based audio applications.

Applications

  • Voice-activated control modules for toys and smart home devices.
  • Audio input stage for portable digital voice recorders and intercom systems.
  • Embedded audio capture in teleconferencing equipment and computer peripherals.
  • Multi-microphone arrays for noise cancellation or sound source localization projects.

Technical Specifications

Model / Type9×7mm Electret Condenser Microphone
Package QuantityPack of 3
Frequency Response50 Hz to 20 kHz
Sensitivity56 - 58 dB
Diameter9 mm
Length / Height7 mm
Key FeaturesLow Noise, Low Power Consumption

Frequently Asked Questions

What is the operating voltage for this microphone?

This is a standard electret condenser microphone capsule. It typically requires a bias voltage (often 2-10V DC) supplied through a series resistor (e.g., 2.2kΩ) to power its internal JFET buffer. Always check your amplifier or interface circuit's requirements for the specific bias configuration.

How do I wire this microphone to an Arduino or microcontroller?

You cannot connect this raw analog microphone capsule directly to a digital GPIO. It requires an analog audio amplifier circuit or a dedicated ADC module. The microphone output connects to the amplifier input, and the amplifier's output can be read via an analog input pin (A0, etc.) on the Arduino. Ensure proper biasing and signal conditioning for best results.

Can these microphones be used for stereo recording?

Yes, the pack of three allows for the creation of stereo or multi-channel recording setups. For stereo, use two microphones with matched left/right channels. For optimal results, ensure identical gain settings and physical placement during calibration to maintain channel balance.

Package Includes

  • 3 x Microphone Capsule (9×7mm)

Additional Information

Weight 0.02 kg
Dimensions 0.8 × 0.8 × 0.2 cm