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- 01:12, 23 August 2025 Visuino talk contribs created page Knowles PDM Mono Audio Microphone - SPM1423HM4H (Created page with "Image:TArduinoSPM1423HM4H.png == Summary == Low-power, top-port MEMS microphone with PDM digital output, designed for high-fidelity audio capture in compact devices.:contentReference[oaicite:2]{index=2} == Description == The **SPM1423HM4H** is a MEMS-based microphone featuring a Pulse Density Modulation (PDM) interface, designed for high-fidelity audio capture in space-constrained applications. It operates with a supply voltage range of 1.6V to 3.6V and offers a si...")
