The Sound Sensor with Sensor Modules ROHS from Waveshare is an analog sound sensor module. It has a small microphone capsule on the front and utilizes a high-quality electret condenser microphone to detect sounds. The module allows users to detect acoustic signals in a wide range of frequencies, and it can measure sounds in ranges from 65 dB to 125 dB. The module has a working voltage of 5V and can output a ranging voltage that is proportional to the acoustic strength of the environment. Additionally, the module has Grove I/O ports for use with Grove type microcontroller platforms. It also has an Independent signal output port for connecting directly to a microcontroller, and it offers an adjustable sensitivity.