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Gadget Hero's Digital Sound Level Meter, Mini Decibel Meter, 30-130dBA Audio Noise Measurement Unit With LCD Display. : Amazon.in: Industrial & Scientific
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Sound Level Meters
Decibel Meter Sound Level Reader -Digital dB SPL Portable Pressure Noise Volume Measurement Device | Voice Loudness Measuring Sensor Audio Tester -Momenturn in Kuwait | Whizz Sound Measurement
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Arduino Sound Level Meter - Measure Sound/Noise Level in dB with Microphone and Arduino
