{"title":"Gravity: Analog Sound Level Meter","handle":"gravity-analog-sound-level-meter","url":"/products/gravity-analog-sound-level-meter","description":"The Gravity Analog Sound Level Meter is an Arduino-compatible decibel meter that accurately measures environmental noise levels. It uses an instrumentation-grade circuit with a low-noise microphone for high-precision readings across a 30–130 dBA range.\n\nThe output voltage is linearly proportional to the decibel level (0.6V–2.6V maps to 30–130 dBA), so no complex algorithms are needed — just a simple linear conversion. The Gravity analog interface allows plug-and-play connection without soldering.\n\nKey Features\n\n\nMeasuring Range – 30 dBA to 130 dBA\n\nMeasurement Error – ±1.5 dB\n\nFrequency Weighting – A-weighted\n\nFrequency Response – 31.5 Hz to 8.5 kHz\n\nTime Characteristics – 125 ms\n\nInput Voltage – 3.3V to 5.0V\n\nInput Current – 22 mA at 3.3V, 14 mA at 5.0V\n\nOutput Voltage – 0.6V to 2.6V (linear mapping to dBA)\n\nInterface – Gravity analog (plug-and-play, no soldering)\n\nDimensions – 60 × 43mm\n\n\nIdeal For\n\nEnvironmental noise monitoring\nHighway and roadside noise measurement stations\nBedroom and indoor noise level tracking\nSound-reactive Arduino projects\n\n\n\nWarning: The black film on the microphone is a sensitive component — do not touch it with fingernails or sharp objects. Do not place the module on conductive or semiconductor surfaces, as this may short the microphone pins. Place on a dry insulating surface or mount with nylon standoffs.\n\n\nPackage Contents\n\n1× Gravity Analog Sound Level Meter\n\n\nResources\n\nProduct wiki (DFRobot)\nPCB layout (PDF)\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":8695,"title":"Default Title","sku":"DF-SEN0232","price":66.88,"on_sale":false,"in_stock":true,"available_quantity":520,"option1":"Default Title"}]}