Sound Detection Sensor Module

The sound detection sensor module for Arduino detects whether the sound has exceeded a threshold value. Sound is detected via microphone and fed into an LM393 op-amp. The sound level set point is adjusted via an onboard potentiometer. When the sound level exceeds the set point, an LED on the module is illuminated and the output is sent low.

Features:
Operating voltage 3.3V-5V
Outputs digital switching output (high and low levels 0 and 1
Operating current (Vcc=5V): 4-8mA
Microphone sensitivity (1Khz): 52-48dB
Microphone Impedance: 2.2K?
Microphone Frequency: 16-20Khz
Microphone S/N ratio: 54dB
Signal output indication
Single-channel signal output
Outputs low level and the signal light when there is sound