OPEN-SMART LM386 Sound Sensor Module is a dual-output voice and sound detection module built around the LM386 audio amplifier IC — delivering both analog signal output for precise sound level measurement and digital HIGH/LOW output for threshold-based sound detection.
Key Features:
- LM386 amplifier IC — reliable, widely used audio amplification for sound detection
- Dual output — analog (sound level) and digital (threshold trigger) simultaneously
- Adjustable analog amplitude — turn potentiometer clockwise to increase analog output amplitude
- Adjustable digital threshold — turn potentiometer clockwise to increase trigger threshold
- Red LED indicator — visual confirmation when sound exceeds set threshold
- 4-pin 2.54mm interface — standard breadboard and jumper wire compatible
- Mounting holes (2.2mm) — secure panel or enclosure installation
- Wide voltage range (3.3–5.3V) — compatible with Arduino, ESP32, and Raspberry Pi
- Compact 42×24mm PCB — easy integration into any project enclosure
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