DFRobot SEN0232 Gravity: Analog Sound Level Meter

This Arduino compatible sound level meter (also known as a decibel meter or noise meter) uses sensitive circuitry and a low-noise microphone to enable it to accurately measure the sound level of the surrounding environment. It can be used for environmental noise testing, such as a highway noise monitoring station, bedroom noise monitoring, etc. Nowadays, there are many kinds of sounds surrounding us, some of which are very loud. It is essential to measure whether the sound is noisy enough to do damage to our health.

This sound level meter is compatible with Arduino and is plug-and-play with no soldering required. It supports 3.3 to 5.0V input voltage, 0.6 to 2.6V voltage output. The decibel value is linear with the output voltage, which gives a simple conversion, without complex algorithms.

* Features: * High Precision: use instrument circuit, low noise microphone * Wide voltage input: 3.3 to 5.0V * Simple conversion: linear analogue output, 0.6 to 2.6V linear correspondence 30 to 130dBA, no complex algorithm is required * Easy to use: plug and play, without soldering * Specification: * Measuring range: 30dBA to 130dBA * Measurement error: ±1.5dB * Frequency weighted: A weighted * Frequency response: 31.5Hz to 8.5kHz * Time characteristics: 125ms * Input voltage: 3.3 to 5.0V * Input current: 22mA @ 3.3V, 14mA@5.0V * Output voltage: 0.6 to 2.6V * Module size: 60 x 43mm (2.37 x 1.68in.) * DFRobot type SEN0232