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M5 Stack

M5 Stack PDM Microphone Unit (SPM1423)

M5 Stack PDM Microphone Unit (SPM1423)

Regular price Rs. 391
Regular price Rs. 464 Sale price Rs. 391
Sale Sold out 16% off Best Price Guaranteed
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Incl. GST (No Hidden Charges)
  • I2S PORT,PDM encoding output (CLK/DAT)
  • High sensitivity, high signal to noise ratio
  • Low power consumption
  • Anti-radio frequency interference
  • Compatible with LEGO
Also checkout M5 Stack Development Kits, Sensors&Hats, Cameras and Modules collection

M5 Stack PDM Microphone Unit (SPM1423)

PDM mini Unit is a digital MEMS silicon-based microphone based on PDM (Pulse Density Modulation) signal. The microphone has a high signal-to-noise ratio, high sensitivity, low power consumption, anti-radio frequency interference, smooth frequency response, and other characteristics. It automatically switches the microphone state according to the clock frequency (power down/activate/sleep)and can be widely used for the audio data collection on wearable devices and smart digital devices.


  • Spectrum Analyzer
  • Recorder
  • Noise meter

Package Includes:

1x PDM mini Unit
1x HY2.0 4P Cable(5CM)


Sensitivity 94dB SPL@1KHz Nom.:-22dBFS
Signal to Noise Ratio 94dB SPL@1KHz,A-weighted Nom.:61.4dB
Total Harmonic Distortion 100dB SPL@1KHz Nom.:1%
Working voltage range 1.6 V to 3.6 V
Working Current 600µA
24 x 24 x 13mm
Weight 8gm

Shipping & Returns

  • All orders confirmed before 3 pm IST are shipped on the
    same day, barring rare pickup delays on holidays or disturbances
  • Delivery time in Metro cities is 1-3 days, Others it is
    3-7 days. It varies based on location, reliant on courier services
  • Return window: 7 days from receipt unless stated
    otherwise. No refunds/replacements after
  • Returns only for non-working/damaged products are accepted
  • Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
  • Refunds are processed within 3-4 working days post inspection and approval.

For more details, please check our Shipping and Return Policy

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  • ⚡ Dispatched within 24 hours

  • 💰 Earn RC Coins on every purchase

  • 🚚 Free shipping on orders above Rs 500/-

  • 🛠️ Dedicated Technical Support Team

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