Size:32mm*17mm*8mm(length*width*height)

Main chip:LM393,Electret condenser microphone

Working voltage: DC 3.3-5V

Signal output indication

Single channel signal output

The output effective signal is low level

When there is sound,outputs low level and the signal light

Can be used for Acoustic control light,give sound and light alarm working with Photosensitive sensor,and sound control,sound detect

Circuit board output switch quantity

Note: The Maximum induction distance is 0.5M

Features:

• 
  

• 100% Brand New.

• 
  

• Size:32mm*17mm*8mm(length*width*height)

• 
  

• Main chip:LM393,Electret condenser microphone

• 
  

• Working voltage: DC 4-6V

• 
  

• Signal output indication

• 
  

• Single channel signal output

• 
  

• The output effective signal is low level

• 
  

• When there is sound,outputs low level and the signal light

• 
  

• Can be used for Acoustic control light,give sound and light alarm working with Photosensitive sensor,and sound control,sound detect

• 
  

• Circuit board output switch quantity

• 
  

• Note: The Maximum induction distance is 0.5

• 

• 1.Can detect the intensity of the sound environment,use note: the sound sensor can identify the presence of (according to the principle of vibration) or a particular frequency of sound does not recognize the volume of the sound
  2. Sensitivity adjustable digital potentiometer to adjust (blue)
  3. Working voltage:3.3 V
  4. Output form digital switch output (1 s and 0 s + v)
  5. Has a fixed bolt hole,convenient installation
  Module wiring instruction
  VCC voltage is 3.3 V to 5 V converter (which can be directly connected to 5 V single-chip microcontroller and 3.3 V)
  GND external GND
  OUT of small plate switch output interface (0 and 1)
  Instructions
  1. Sound module sound intensity is the most sensitive to the environment,commonly used to detect the intensity of the sound of the surroundings.
  2.Module in the intensity of the sound environment than set threshold,the OUT output high level,when the intensity of the sound from the outside environment more than set threshold,the module OUT output low level;
  3. Small digital output board OUT can be attached directly to the microcontroller,through single chip microcomputer to detect the high and low level,thus to detect sound environment;
  4. Small digital output board OUT this shop can be directly driven relay module,which can form a voice-activated switch;
• 
• Description：
• the MAX446 is a micropower operational ampophone preamplifier.offer an ideoptimized gain-bandwidth products and supply current,as well avoltage oa-small packages,The MAX 4466 has gastability and provides a gain bandwidth of 200KHZ w24UA Osupply current. After decompression,aum stable gain of +5V/eved and a 600khz gain bandwidth prodadditioplifiers feature rail-to-rail outpxcellent power supply rejection and common-mode rejectionoisy environments. Widely used in cellular phonesepeaters,headphones,heariophone preamprtable computers,speech recognition syst
• Features and benefits
  Power supply voltage:+2.4V to +5.5V(can be directly connected to STM/ARDUNIO/Raspberry Pi and other development board)
  Power supply rejection ratio: 112db
  Common mode reiection ratio: 126db
  AVOL: 125db (RL= 100kΩ)rail-to-rail output
  static supply current: <24uA
  Gain bandwidth: 600k
  size：20.8MM*13.8MM*7.5MM
• 
• Specifications:
  - Supply Voltage: 2.7v-5.5v @ 3mA current
  - Output: 2Vpp on 1.25V bias
  - Frequency Response: 20Hz - 20KHz
  - Programmable Attack and Release Ratio
  - Automatic gain,selectable max from 40dB,50dB or 60dB
  - Low Input-Referred Noise Density of 30nV/
  - Low THD: 0.04% (typ)

• 

• LM386 Audio Power Amplifier Module Sound Detection Sensor Voice Sensor Board for Ambient Sound Detection
  
  

  Overview
  
  Onboard audio power amplifier LM386
  Audio signal gain up to 200
  Adjustable voltage amplitude for analog output
  Signal output indicator
  
  Specifications
  
  Power: 3.3V ~ 5.3V
  Dimension: 39.0mm * 21.0mm
  Mounting holes size: 2.0mm
  
  Applications
  
  Ambient sound detection
  Sound level detection
  How to Use
  
  In the case of working with a MCU:
  
  VCC ↔ 3.3V ~ 5.3V
  GND ↔ power supply ground
  AOUT ↔ MCU.IO (analog output)
  DOUT ↔ MCU.IO (digital output)

•