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Portable GM1356 Digital Sound Level Meter 30~130 dB Decibel Noise Measurement Tester for Indoor/Outdoor Uses by Tekit - Multi Testers - Amazon.com
▷ Sound level meter (Decibel-meter) - Gravity, Analog output - MCHobby - Vente de Raspberry Pi, Arduino, ODROID, Adafruit
Gravity: Analog Sound Level Meter(SEN0232)
