The Sound Sensor can detect the sound strength of the environment. The main component of the module is a simple microphone and LM393 level convertor chip. The sensor can provide both digital aswell as analog output.
 
Specifications:
Operating voltage 3.3V-5V
Outputs digital switching output (high and low level 0 and 1)
Operating current (Vcc=5V): 4-8mA
Microphone sensitivity (1Khz): 52-48dB
Microphone Impedance: 2.2KΩ
Microphone Frequency: 16-20Khz
Microphone S/N ratio: 54dB
 
Module features:
1. there is a mounting screw hole 3mm.
2. 5v DC power supply
3. With analog output
4. there are threshold level output flip
5. high sensitive microphone and high sensitivity.
6. Power indicator light
7. comparator output is light