Power supply voltage: +5V
Power On LED light: LED1
Electret Condenser Microphone (ECM) sensor
AO = analog output provides a real-time output voltage signal of the microphone
DO = Digital output, output goes high when the intensity of the sound reaches threshold
Comparator Circuit: LM393
Comparator Output LED: LED2, on when sound reaches threshold
Built in potentiometer can be used to adjust the DO threshold level
Mounting screw hole size: 3mm
Circuit Board Dimensions: 35mm x 15mm x 14mm (L x W x H, excluding connector and microphone)
Pin + to +5VDC
Pin - to Ground
Pin AO to Microcontroller Analog Input (for analog program)
Pin DO to Microcontroller Digital Input (for digital program)
LED1 will illuminate when power is applied
Turn potentiometer counter-clockwise until LED2 turns off. This is the sound threshold. Then adjust to the appropriate threshold for your application.
Package includes:
1X Sound detection microphone sensor module KY-037
Note: all the descriptions and prices are subject to change without prior notice.
Free Shipping: No
Shipping Weight/Unit(g): 0.00
Std. Packing Qty. (pcs): 1