Sound sensor

High‑Sensitivity Digital Sound Sensor for Precise Acoustic Sensing

Packaged in a compact module, this sound sensor converts ambient acoustic pressure into a reliable digital output that can be directly read by microcontrollers, SBCs, or IO‑focused analog comparison circuits. Designed for industrial, hobbyist, and IoT applications, the sensor features an integrated MEMS microphone, low‑noise amplifier, and programmable threshold detection. It delivers consistent performance over a wide frequency bandwidth, providing accurate trigger signals for home automation, security systems, and sound‑activated instrumentation.

• Key Spec 1: Frequency response 64 Hz – 4 kHz with flat gain and −32 dB input impedance
• Key Spec 2: Digital output (TTL/CMOS) at 1.8 V – 5.5 V supply, self‑powered from 3 V to 5 V
• Key Spec 3: Built‑in programmable cut‑off threshold (adjustable 0–100 dB) via I²C interface
• Common Use Case: Voice‑activated switches, proximity alerts, and audio‑triggered security cameras in smart‑home setups

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